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Finding the Fourth Proportional to 394,620.40, 591,930.60 and 252,902.80

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Solution

The fourth proportional to 394,620.40, 591,930.60 and 252,902.80 is: 379,354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,620.40 : 591,930.60 = 252,902.80 : x
  2. Step 2: Convert to fraction form
    394,620.40/591,930.60 = 252,902.80/x
  3. Step 3: Cross multiply
    394,620.40x = 591,930.60 × 252,902.80
  4. Step 4: Simplify right side
    394,620.40x = 149,700,906,145.68
  5. Step 5: Solve for x
    x = 149,700,906,145.68/394,620.40
  6. Step 6: Final answer
    x = 379,354.20

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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.