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Finding the Fourth Proportional to 275,719.91, 412,998.62 and 126,086.13

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Solution

The fourth proportional to 275,719.91, 412,998.62 and 126,086.13 is: 188,863.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,719.91 : 412,998.62 = 126,086.13 : x
  2. Step 2: Convert to fraction form
    275,719.91/412,998.62 = 126,086.13/x
  3. Step 3: Cross multiply
    275,719.91x = 412,998.62 × 126,086.13
  4. Step 4: Simplify right side
    275,719.91x = 52,073,397,060.71
  5. Step 5: Solve for x
    x = 52,073,397,060.71/275,719.91
  6. Step 6: Final answer
    x = 188,863.39

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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.