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Finding the Fourth Proportional to 417,084.80, 625,627.20 and 136,630.40

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Solution

The fourth proportional to 417,084.80, 625,627.20 and 136,630.40 is: 204,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,084.80 : 625,627.20 = 136,630.40 : x
  2. Step 2: Convert to fraction form
    417,084.80/625,627.20 = 136,630.40/x
  3. Step 3: Cross multiply
    417,084.80x = 625,627.20 × 136,630.40
  4. Step 4: Simplify right side
    417,084.80x = 85,479,694,586.88
  5. Step 5: Solve for x
    x = 85,479,694,586.88/417,084.80
  6. Step 6: Final answer
    x = 204,945.60

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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.