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Finding the Fourth Proportional to 221,279, 332,249.79 and 126,615.92

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Solution

The fourth proportional to 221,279, 332,249.79 and 126,615.92 is: 190,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,279 : 332,249.79 = 126,615.92 : x
  2. Step 2: Convert to fraction form
    221,279/332,249.79 = 126,615.92/x
  3. Step 3: Cross multiply
    221,279x = 332,249.79 × 126,615.92
  4. Step 4: Simplify right side
    221,279x = 42,068,112,830.66
  5. Step 5: Solve for x
    x = 42,068,112,830.66/221,279
  6. Step 6: Final answer
    x = 190,113.44

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1.5x scale

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.