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Finding the Fourth Proportional to 226,131.64, 339,232.08 and 74,281

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Solution

The fourth proportional to 226,131.64, 339,232.08 and 74,281 is: 111,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,131.64 : 339,232.08 = 74,281 : x
  2. Step 2: Convert to fraction form
    226,131.64/339,232.08 = 74,281/x
  3. Step 3: Cross multiply
    226,131.64x = 339,232.08 × 74,281
  4. Step 4: Simplify right side
    226,131.64x = 25,198,498,134.48
  5. Step 5: Solve for x
    x = 25,198,498,134.48/226,131.64
  6. Step 6: Final answer
    x = 111,432.87

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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.