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Finding the Fourth Proportional to 502,105.20, 752,920.20 and 291,807.60

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Solution

The fourth proportional to 502,105.20, 752,920.20 and 291,807.60 is: 437,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,105.20 : 752,920.20 = 291,807.60 : x
  2. Step 2: Convert to fraction form
    502,105.20/752,920.20 = 291,807.60/x
  3. Step 3: Cross multiply
    502,105.20x = 752,920.20 × 291,807.60
  4. Step 4: Simplify right side
    502,105.20x = 219,707,836,553.52
  5. Step 5: Solve for x
    x = 219,707,836,553.52/502,105.20
  6. Step 6: Final answer
    x = 437,573.31

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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.