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Finding the Fourth Proportional to 278,982, 418,657.32 and 131,249.52

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Solution

The fourth proportional to 278,982, 418,657.32 and 131,249.52 is: 196,960.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,982 : 418,657.32 = 131,249.52 : x
  2. Step 2: Convert to fraction form
    278,982/418,657.32 = 131,249.52/x
  3. Step 3: Cross multiply
    278,982x = 418,657.32 × 131,249.52
  4. Step 4: Simplify right side
    278,982x = 54,948,572,294.49
  5. Step 5: Solve for x
    x = 54,948,572,294.49/278,982
  6. Step 6: Final answer
    x = 196,960.99

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1.5x scale

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.