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Finding the Fourth Proportional to 279,862.21, 419,791.22 and 80,182.76

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Solution

The fourth proportional to 279,862.21, 419,791.22 and 80,182.76 is: 120,273.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,862.21 : 419,791.22 = 80,182.76 : x
  2. Step 2: Convert to fraction form
    279,862.21/419,791.22 = 80,182.76/x
  3. Step 3: Cross multiply
    279,862.21x = 419,791.22 × 80,182.76
  4. Step 4: Simplify right side
    279,862.21x = 33,660,019,592.62
  5. Step 5: Solve for x
    x = 33,660,019,592.62/279,862.21
  6. Step 6: Final answer
    x = 120,273.54

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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.