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Finding the Fourth Proportional to 381,630.87, 572,586.63 and 156,931.20

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Solution

The fourth proportional to 381,630.87, 572,586.63 and 156,931.20 is: 235,454.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,630.87 : 572,586.63 = 156,931.20 : x
  2. Step 2: Convert to fraction form
    381,630.87/572,586.63 = 156,931.20/x
  3. Step 3: Cross multiply
    381,630.87x = 572,586.63 × 156,931.20
  4. Step 4: Simplify right side
    381,630.87x = 89,856,706,949.86
  5. Step 5: Solve for x
    x = 89,856,706,949.86/381,630.87
  6. Step 6: Final answer
    x = 235,454.50

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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.