Why isn't setLayoutParams changing the size of my ImageView?

I have done this in the past and I am frustrated because this method is not working like I expect it to. I have an image that I want to resize to specific dimensions and I am using the code below:

snellen.post(new Runnable() {
        @Override
        public void run() {
            ConstraintLayout.LayoutParams params = (ConstraintLayout.LayoutParams) snellen.getLayoutParams();
            params.width = (int)(converted*WIDTH_RATIO);
            params.height = (int)(converted*HEIGHT_RATIO);

            snellen.setLayoutParams(params);

            System.out.println("########################################################################### SNELLEN CHART WIDTH: : " + snellen.getWidth());
            System.out.println("########################################################################### SNELLEN CHART HEIGHT: : " + snellen.getHeight());
        }
    });

I have checked what both (converted*WIDTH_RATIO) and (converted*HEIGHT_RATIO) are and they are somewhere in the 100's. I have put it inside a handler so I can get the correct getLayoutParams() because I have had trouble with that in the past.

The problem is that when I print out what the width and hights are they are not what I have set them to inside the params.width and params.height. What am I doing wrong here?