Home / 278,972.80-418,546.64-92,115.52

Finding the Fourth Proportional to 278,972.80, 418,546.64 and 92,115.52

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Solution

The fourth proportional to 278,972.80, 418,546.64 and 92,115.52 is: 138,202.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,972.80 : 418,546.64 = 92,115.52 : x
  2. Step 2: Convert to fraction form
    278,972.80/418,546.64 = 92,115.52/x
  3. Step 3: Cross multiply
    278,972.80x = 418,546.64 × 92,115.52
  4. Step 4: Simplify right side
    278,972.80x = 38,554,641,387.85
  5. Step 5: Solve for x
    x = 38,554,641,387.85/278,972.80
  6. Step 6: Final answer
    x = 138,202.15

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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.