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Finding the Fourth Proportional to 279,787.97, 419,558.49 and 80,062.89

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Solution

The fourth proportional to 279,787.97, 419,558.49 and 80,062.89 is: 120,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,787.97 : 419,558.49 = 80,062.89 : x
  2. Step 2: Convert to fraction form
    279,787.97/419,558.49 = 80,062.89/x
  3. Step 3: Cross multiply
    279,787.97x = 419,558.49 × 80,062.89
  4. Step 4: Simplify right side
    279,787.97x = 33,591,065,233.44
  5. Step 5: Solve for x
    x = 33,591,065,233.44/279,787.97
  6. Step 6: Final answer
    x = 120,059.01

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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.