Home / 220,743.30-331,121.03-80,606.34

Finding the Fourth Proportional to 220,743.30, 331,121.03 and 80,606.34

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Solution

The fourth proportional to 220,743.30, 331,121.03 and 80,606.34 is: 120,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,743.30 : 331,121.03 = 80,606.34 : x
  2. Step 2: Convert to fraction form
    220,743.30/331,121.03 = 80,606.34/x
  3. Step 3: Cross multiply
    220,743.30x = 331,121.03 × 80,606.34
  4. Step 4: Simplify right side
    220,743.30x = 26,690,454,325.33
  5. Step 5: Solve for x
    x = 26,690,454,325.33/220,743.30
  6. Step 6: Final answer
    x = 120,911.73

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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.