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Finding the Fourth Proportional to 276,843.80, 415,244.10 and 108,331.40

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Solution

The fourth proportional to 276,843.80, 415,244.10 and 108,331.40 is: 162,488.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,843.80 : 415,244.10 = 108,331.40 : x
  2. Step 2: Convert to fraction form
    276,843.80/415,244.10 = 108,331.40/x
  3. Step 3: Cross multiply
    276,843.80x = 415,244.10 × 108,331.40
  4. Step 4: Simplify right side
    276,843.80x = 44,983,974,694.74
  5. Step 5: Solve for x
    x = 44,983,974,694.74/276,843.80
  6. Step 6: Final answer
    x = 162,488.65

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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.