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Finding the Fourth Proportional to 225,454.20, 311,118.54 and 129,964.92

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Solution

The fourth proportional to 225,454.20, 311,118.54 and 129,964.92 is: 179,346.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,454.20 : 311,118.54 = 129,964.92 : x
  2. Step 2: Convert to fraction form
    225,454.20/311,118.54 = 129,964.92/x
  3. Step 3: Cross multiply
    225,454.20x = 311,118.54 × 129,964.92
  4. Step 4: Simplify right side
    225,454.20x = 40,434,496,161.62
  5. Step 5: Solve for x
    x = 40,434,496,161.62/225,454.20
  6. Step 6: Final answer
    x = 179,346.83

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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.