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Finding the Fourth Proportional to 317,652.57, 476,491.80 and 81,001.38

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Solution

The fourth proportional to 317,652.57, 476,491.80 and 81,001.38 is: 121,505.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,652.57 : 476,491.80 = 81,001.38 : x
  2. Step 2: Convert to fraction form
    317,652.57/476,491.80 = 81,001.38/x
  3. Step 3: Cross multiply
    317,652.57x = 476,491.80 × 81,001.38
  4. Step 4: Simplify right side
    317,652.57x = 38,596,493,358.68
  5. Step 5: Solve for x
    x = 38,596,493,358.68/317,652.57
  6. Step 6: Final answer
    x = 121,505.37

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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.