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Finding the Fourth Proportional to 226,514.60, 339,642.30 and 68,719.40

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Solution

The fourth proportional to 226,514.60, 339,642.30 and 68,719.40 is: 103,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,514.60 : 339,642.30 = 68,719.40 : x
  2. Step 2: Convert to fraction form
    226,514.60/339,642.30 = 68,719.40/x
  3. Step 3: Cross multiply
    226,514.60x = 339,642.30 × 68,719.40
  4. Step 4: Simplify right side
    226,514.60x = 23,340,015,070.62
  5. Step 5: Solve for x
    x = 23,340,015,070.62/226,514.60
  6. Step 6: Final answer
    x = 103,039.78

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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.