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Finding the Fourth Proportional to 415,974.60, 624,118.20 and 247,591.80

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Solution

The fourth proportional to 415,974.60, 624,118.20 and 247,591.80 is: 371,480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,974.60 : 624,118.20 = 247,591.80 : x
  2. Step 2: Convert to fraction form
    415,974.60/624,118.20 = 247,591.80/x
  3. Step 3: Cross multiply
    415,974.60x = 624,118.20 × 247,591.80
  4. Step 4: Simplify right side
    415,974.60x = 154,526,548,550.76
  5. Step 5: Solve for x
    x = 154,526,548,550.76/415,974.60
  6. Step 6: Final answer
    x = 371,480.73

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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.