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Finding the Fourth Proportional to 273,986.70, 411,044.85 and 86,998.20

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Solution

The fourth proportional to 273,986.70, 411,044.85 and 86,998.20 is: 130,517.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,986.70 : 411,044.85 = 86,998.20 : x
  2. Step 2: Convert to fraction form
    273,986.70/411,044.85 = 86,998.20/x
  3. Step 3: Cross multiply
    273,986.70x = 411,044.85 × 86,998.20
  4. Step 4: Simplify right side
    273,986.70x = 35,760,162,069.27
  5. Step 5: Solve for x
    x = 35,760,162,069.27/273,986.70
  6. Step 6: Final answer
    x = 130,517.88

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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.