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Finding the Fourth Proportional to 220,427.74, 330,735.22 and 120,471.15

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Solution

The fourth proportional to 220,427.74, 330,735.22 and 120,471.15 is: 180,757.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,427.74 : 330,735.22 = 120,471.15 : x
  2. Step 2: Convert to fraction form
    220,427.74/330,735.22 = 120,471.15/x
  3. Step 3: Cross multiply
    220,427.74x = 330,735.22 × 120,471.15
  4. Step 4: Simplify right side
    220,427.74x = 39,844,051,170.89
  5. Step 5: Solve for x
    x = 39,844,051,170.89/220,427.74
  6. Step 6: Final answer
    x = 180,757.88

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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.