Home / 221,105.28-305,174.49-140,517.06

Finding the Fourth Proportional to 221,105.28, 305,174.49 and 140,517.06

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Solution

The fourth proportional to 221,105.28, 305,174.49 and 140,517.06 is: 193,944.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,105.28 : 305,174.49 = 140,517.06 : x
  2. Step 2: Convert to fraction form
    221,105.28/305,174.49 = 140,517.06/x
  3. Step 3: Cross multiply
    221,105.28x = 305,174.49 × 140,517.06
  4. Step 4: Simplify right side
    221,105.28x = 42,882,222,121.80
  5. Step 5: Solve for x
    x = 42,882,222,121.80/221,105.28
  6. Step 6: Final answer
    x = 193,944.81

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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.