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Finding the Fourth Proportional to 220,082.31, 330,145.34 and 79,851.87

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Solution

The fourth proportional to 220,082.31, 330,145.34 and 79,851.87 is: 119,785.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,082.31 : 330,145.34 = 79,851.87 : x
  2. Step 2: Convert to fraction form
    220,082.31/330,145.34 = 79,851.87/x
  3. Step 3: Cross multiply
    220,082.31x = 330,145.34 × 79,851.87
  4. Step 4: Simplify right side
    220,082.31x = 26,362,722,371.53
  5. Step 5: Solve for x
    x = 26,362,722,371.53/220,082.31
  6. Step 6: Final answer
    x = 119,785.74

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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.