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Finding the Fourth Proportional to 226,129.62, 339,194.43 and 85,887.90

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Solution

The fourth proportional to 226,129.62, 339,194.43 and 85,887.90 is: 128,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,129.62 : 339,194.43 = 85,887.90 : x
  2. Step 2: Convert to fraction form
    226,129.62/339,194.43 = 85,887.90/x
  3. Step 3: Cross multiply
    226,129.62x = 339,194.43 × 85,887.90
  4. Step 4: Simplify right side
    226,129.62x = 29,132,697,284.40
  5. Step 5: Solve for x
    x = 29,132,697,284.40/226,129.62
  6. Step 6: Final answer
    x = 128,831.85

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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.