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Finding the Fourth Proportional to 276,956.47, 415,434.68 and 87,549.86

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Solution

The fourth proportional to 276,956.47, 415,434.68 and 87,549.86 is: 131,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,956.47 : 415,434.68 = 87,549.86 : x
  2. Step 2: Convert to fraction form
    276,956.47/415,434.68 = 87,549.86/x
  3. Step 3: Cross multiply
    276,956.47x = 415,434.68 × 87,549.86
  4. Step 4: Simplify right side
    276,956.47x = 36,371,247,635.40
  5. Step 5: Solve for x
    x = 36,371,247,635.40/276,956.47
  6. Step 6: Final answer
    x = 131,324.78

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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.