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Finding the Fourth Proportional to 387,167.85, 581,121.17 and 237,700.07

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Solution

The fourth proportional to 387,167.85, 581,121.17 and 237,700.07 is: 356,776.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,167.85 : 581,121.17 = 237,700.07 : x
  2. Step 2: Convert to fraction form
    387,167.85/581,121.17 = 237,700.07/x
  3. Step 3: Cross multiply
    387,167.85x = 581,121.17 × 237,700.07
  4. Step 4: Simplify right side
    387,167.85x = 138,132,540,476.13
  5. Step 5: Solve for x
    x = 138,132,540,476.13/387,167.85
  6. Step 6: Final answer
    x = 356,776.89

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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.