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Finding the Fourth Proportional to 482,915.80, 724,341.30 and 127,922.20

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Solution

The fourth proportional to 482,915.80, 724,341.30 and 127,922.20 is: 191,874.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,915.80 : 724,341.30 = 127,922.20 : x
  2. Step 2: Convert to fraction form
    482,915.80/724,341.30 = 127,922.20/x
  3. Step 3: Cross multiply
    482,915.80x = 724,341.30 × 127,922.20
  4. Step 4: Simplify right side
    482,915.80x = 92,659,332,646.86
  5. Step 5: Solve for x
    x = 92,659,332,646.86/482,915.80
  6. Step 6: Final answer
    x = 191,874.72

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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.