Home / 661,747.06-992,136.71-212,212.04

Finding the Fourth Proportional to 661,747.06, 992,136.71 and 212,212.04

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Solution

The fourth proportional to 661,747.06, 992,136.71 and 212,212.04 is: 318,162.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,747.06 : 992,136.71 = 212,212.04 : x
  2. Step 2: Convert to fraction form
    661,747.06/992,136.71 = 212,212.04/x
  3. Step 3: Cross multiply
    661,747.06x = 992,136.71 × 212,212.04
  4. Step 4: Simplify right side
    661,747.06x = 210,543,358,198.86
  5. Step 5: Solve for x
    x = 210,543,358,198.86/661,747.06
  6. Step 6: Final answer
    x = 318,162.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.