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Finding the Fourth Proportional to 482,764.80, 724,492.80 and 272,179.20

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Solution

The fourth proportional to 482,764.80, 724,492.80 and 272,179.20 is: 408,463.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,764.80 : 724,492.80 = 272,179.20 : x
  2. Step 2: Convert to fraction form
    482,764.80/724,492.80 = 272,179.20/x
  3. Step 3: Cross multiply
    482,764.80x = 724,492.80 × 272,179.20
  4. Step 4: Simplify right side
    482,764.80x = 197,191,870,709.76
  5. Step 5: Solve for x
    x = 197,191,870,709.76/482,764.80
  6. Step 6: Final answer
    x = 408,463.65

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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.