Footer widgets and blog

Hi, If I leave one of the footer widgets empty one of the three remaining ones becomes the width of two. Is there a way to make it so that there are only three footer widgets of equal size? On the blog page most of the posts have featured images. The text for the posts which don't have an image stretches the full width of the content area. The ones with an image treats the image like it has it's own column. How can I make it so that the text for the posts with a featured image wraps under the image in it's 'column' so they match the posts without an image. The page with the posts is here thank you