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Finding the Fourth Proportional to 272,011.70, 408,082.35 and 131,654.90

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Solution

The fourth proportional to 272,011.70, 408,082.35 and 131,654.90 is: 197,513.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,011.70 : 408,082.35 = 131,654.90 : x
  2. Step 2: Convert to fraction form
    272,011.70/408,082.35 = 131,654.90/x
  3. Step 3: Cross multiply
    272,011.70x = 408,082.35 × 131,654.90
  4. Step 4: Simplify right side
    272,011.70x = 53,726,040,981.02
  5. Step 5: Solve for x
    x = 53,726,040,981.02/272,011.70
  6. Step 6: Final answer
    x = 197,513.71

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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.