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Finding the Fourth Proportional to 279,385.35, 418,841.10 and 101,788.80

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Solution

The fourth proportional to 279,385.35, 418,841.10 and 101,788.80 is: 152,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,385.35 : 418,841.10 = 101,788.80 : x
  2. Step 2: Convert to fraction form
    279,385.35/418,841.10 = 101,788.80/x
  3. Step 3: Cross multiply
    279,385.35x = 418,841.10 × 101,788.80
  4. Step 4: Simplify right side
    279,385.35x = 42,633,332,959.68
  5. Step 5: Solve for x
    x = 42,633,332,959.68/279,385.35
  6. Step 6: Final answer
    x = 152,596.88

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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.