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Finding the Fourth Proportional to 273,868.73, 411,141.41 and 129,912.20

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Solution

The fourth proportional to 273,868.73, 411,141.41 and 129,912.20 is: 195,028.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,868.73 : 411,141.41 = 129,912.20 : x
  2. Step 2: Convert to fraction form
    273,868.73/411,141.41 = 129,912.20/x
  3. Step 3: Cross multiply
    273,868.73x = 411,141.41 × 129,912.20
  4. Step 4: Simplify right side
    273,868.73x = 53,412,282,378.93
  5. Step 5: Solve for x
    x = 53,412,282,378.93/273,868.73
  6. Step 6: Final answer
    x = 195,028.78

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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.