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Finding the Fourth Proportional to 487,372.27, 731,060.45 and 319,951.95

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Solution

The fourth proportional to 487,372.27, 731,060.45 and 319,951.95 is: 479,929.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,372.27 : 731,060.45 = 319,951.95 : x
  2. Step 2: Convert to fraction form
    487,372.27/731,060.45 = 319,951.95/x
  3. Step 3: Cross multiply
    487,372.27x = 731,060.45 × 319,951.95
  4. Step 4: Simplify right side
    487,372.27x = 233,904,215,910.00
  5. Step 5: Solve for x
    x = 233,904,215,910.00/487,372.27
  6. Step 6: Final answer
    x = 479,929.27

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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.