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Finding the Fourth Proportional to 252,939.77, 379,459.46 and 75,442.85

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Solution

The fourth proportional to 252,939.77, 379,459.46 and 75,442.85 is: 113,179.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,939.77 : 379,459.46 = 75,442.85 : x
  2. Step 2: Convert to fraction form
    252,939.77/379,459.46 = 75,442.85/x
  3. Step 3: Cross multiply
    252,939.77x = 379,459.46 × 75,442.85
  4. Step 4: Simplify right side
    252,939.77x = 28,627,501,224.56
  5. Step 5: Solve for x
    x = 28,627,501,224.56/252,939.77
  6. Step 6: Final answer
    x = 113,179.12

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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.