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Finding the Fourth Proportional to 279,922.80, 419,757.84 and 80,197.47

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Solution

The fourth proportional to 279,922.80, 419,757.84 and 80,197.47 is: 120,260.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,922.80 : 419,757.84 = 80,197.47 : x
  2. Step 2: Convert to fraction form
    279,922.80/419,757.84 = 80,197.47/x
  3. Step 3: Cross multiply
    279,922.80x = 419,757.84 × 80,197.47
  4. Step 4: Simplify right side
    279,922.80x = 33,663,516,780.66
  5. Step 5: Solve for x
    x = 33,663,516,780.66/279,922.80
  6. Step 6: Final answer
    x = 120,260.00

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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.