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Finding the Fourth Proportional to 252,889.28, 379,353.28 and 75,382.72

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Solution

The fourth proportional to 252,889.28, 379,353.28 and 75,382.72 is: 113,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,889.28 : 379,353.28 = 75,382.72 : x
  2. Step 2: Convert to fraction form
    252,889.28/379,353.28 = 75,382.72/x
  3. Step 3: Cross multiply
    252,889.28x = 379,353.28 × 75,382.72
  4. Step 4: Simplify right side
    252,889.28x = 28,596,682,087.32
  5. Step 5: Solve for x
    x = 28,596,682,087.32/252,889.28
  6. Step 6: Final answer
    x = 113,079.85

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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.