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Finding the Fourth Proportional to 351,731.54, 527,592.72 and 85,491.30

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Solution

The fourth proportional to 351,731.54, 527,592.72 and 85,491.30 is: 128,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,731.54 : 527,592.72 = 85,491.30 : x
  2. Step 2: Convert to fraction form
    351,731.54/527,592.72 = 85,491.30/x
  3. Step 3: Cross multiply
    351,731.54x = 527,592.72 × 85,491.30
  4. Step 4: Simplify right side
    351,731.54x = 45,104,587,503.34
  5. Step 5: Solve for x
    x = 45,104,587,503.34/351,731.54
  6. Step 6: Final answer
    x = 128,235.83

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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.