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Finding the Fourth Proportional to 482,758.80, 724,138.20 and 127,808.70

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Solution

The fourth proportional to 482,758.80, 724,138.20 and 127,808.70 is: 191,713.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,758.80 : 724,138.20 = 127,808.70 : x
  2. Step 2: Convert to fraction form
    482,758.80/724,138.20 = 127,808.70/x
  3. Step 3: Cross multiply
    482,758.80x = 724,138.20 × 127,808.70
  4. Step 4: Simplify right side
    482,758.80x = 92,551,161,962.34
  5. Step 5: Solve for x
    x = 92,551,161,962.34/482,758.80
  6. Step 6: Final answer
    x = 191,713.05

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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.