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Finding the Fourth Proportional to 252,753.75, 379,422.23 and 128,357.19

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Solution

The fourth proportional to 252,753.75, 379,422.23 and 128,357.19 is: 192,683.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,753.75 : 379,422.23 = 128,357.19 : x
  2. Step 2: Convert to fraction form
    252,753.75/379,422.23 = 128,357.19/x
  3. Step 3: Cross multiply
    252,753.75x = 379,422.23 × 128,357.19
  4. Step 4: Simplify right side
    252,753.75x = 48,701,570,624.55
  5. Step 5: Solve for x
    x = 48,701,570,624.55/252,753.75
  6. Step 6: Final answer
    x = 192,683.87

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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.