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Finding the Fourth Proportional to 639,753.28, 959,765.24 and 240,397.52

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Solution

The fourth proportional to 639,753.28, 959,765.24 and 240,397.52 is: 360,647.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,753.28 : 959,765.24 = 240,397.52 : x
  2. Step 2: Convert to fraction form
    639,753.28/959,765.24 = 240,397.52/x
  3. Step 3: Cross multiply
    639,753.28x = 959,765.24 × 240,397.52
  4. Step 4: Simplify right side
    639,753.28x = 230,725,183,478.21
  5. Step 5: Solve for x
    x = 230,725,183,478.21/639,753.28
  6. Step 6: Final answer
    x = 360,647.13

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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.