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Finding the Fourth Proportional to 486,543.92, 729,885.72 and 149,612.90

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Solution

The fourth proportional to 486,543.92, 729,885.72 and 149,612.90 is: 224,440.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,543.92 : 729,885.72 = 149,612.90 : x
  2. Step 2: Convert to fraction form
    486,543.92/729,885.72 = 149,612.90/x
  3. Step 3: Cross multiply
    486,543.92x = 729,885.72 × 149,612.90
  4. Step 4: Simplify right side
    486,543.92x = 109,200,319,237.79
  5. Step 5: Solve for x
    x = 109,200,319,237.79/486,543.92
  6. Step 6: Final answer
    x = 224,440.83

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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.