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Finding the Fourth Proportional to 502,530.72, 753,792.24 and 128,553.12

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Solution

The fourth proportional to 502,530.72, 753,792.24 and 128,553.12 is: 192,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,530.72 : 753,792.24 = 128,553.12 : x
  2. Step 2: Convert to fraction form
    502,530.72/753,792.24 = 128,553.12/x
  3. Step 3: Cross multiply
    502,530.72x = 753,792.24 × 128,553.12
  4. Step 4: Simplify right side
    502,530.72x = 96,902,344,283.79
  5. Step 5: Solve for x
    x = 96,902,344,283.79/502,530.72
  6. Step 6: Final answer
    x = 192,828.70

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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.