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Finding the Fourth Proportional to 226,447.59, 312,490.92 and 129,648.23

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Solution

The fourth proportional to 226,447.59, 312,490.92 and 129,648.23 is: 178,910.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,447.59 : 312,490.92 = 129,648.23 : x
  2. Step 2: Convert to fraction form
    226,447.59/312,490.92 = 129,648.23/x
  3. Step 3: Cross multiply
    226,447.59x = 312,490.92 × 129,648.23
  4. Step 4: Simplify right side
    226,447.59x = 40,513,895,450.30
  5. Step 5: Solve for x
    x = 40,513,895,450.30/226,447.59
  6. Step 6: Final answer
    x = 178,910.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.