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Finding the Fourth Proportional to 225,229.17, 310,928.85 and 129,717.48

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Solution

The fourth proportional to 225,229.17, 310,928.85 and 129,717.48 is: 179,074.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,229.17 : 310,928.85 = 129,717.48 : x
  2. Step 2: Convert to fraction form
    225,229.17/310,928.85 = 129,717.48/x
  3. Step 3: Cross multiply
    225,229.17x = 310,928.85 × 129,717.48
  4. Step 4: Simplify right side
    225,229.17x = 40,332,906,881.30
  5. Step 5: Solve for x
    x = 40,332,906,881.30/225,229.17
  6. Step 6: Final answer
    x = 179,074.97

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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.