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Finding the Fourth Proportional to 279,197.52, 418,843.32 and 129,377.04

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Solution

The fourth proportional to 279,197.52, 418,843.32 and 129,377.04 is: 194,087.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,197.52 : 418,843.32 = 129,377.04 : x
  2. Step 2: Convert to fraction form
    279,197.52/418,843.32 = 129,377.04/x
  3. Step 3: Cross multiply
    279,197.52x = 418,843.32 × 129,377.04
  4. Step 4: Simplify right side
    279,197.52x = 54,188,708,965.37
  5. Step 5: Solve for x
    x = 54,188,708,965.37/279,197.52
  6. Step 6: Final answer
    x = 194,087.36

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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.