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Finding the Fourth Proportional to 487,426.38, 731,154.56 and 132,447.94

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Solution

The fourth proportional to 487,426.38, 731,154.56 and 132,447.94 is: 198,675.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,426.38 : 731,154.56 = 132,447.94 : x
  2. Step 2: Convert to fraction form
    487,426.38/731,154.56 = 132,447.94/x
  3. Step 3: Cross multiply
    487,426.38x = 731,154.56 × 132,447.94
  4. Step 4: Simplify right side
    487,426.38x = 96,839,915,293.61
  5. Step 5: Solve for x
    x = 96,839,915,293.61/487,426.38
  6. Step 6: Final answer
    x = 198,675.98

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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.