$(document).ready(function(){
    $('.height-outer').each(function(){
        var highestBox = 0;
        $('.equilheight', this).each(function(){
            if($(this).height() > highestBox) {
                highestBox = $(this).height();
            }
        });
        $('.equilheight',this).height(highestBox);
    });
});


/*
*   <div class="container height-outer">
*       <div class="col-xs-4 equilheight">
*       <div class="col-xs-4 equilheight">
*       <div class="col-xs-4 equilheight">
*   </div>
*/