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Finding the Fourth Proportional to 250,472.84, 375,766.86 and 81,998.60

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Solution

The fourth proportional to 250,472.84, 375,766.86 and 81,998.60 is: 123,016.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,472.84 : 375,766.86 = 81,998.60 : x
  2. Step 2: Convert to fraction form
    250,472.84/375,766.86 = 81,998.60/x
  3. Step 3: Cross multiply
    250,472.84x = 375,766.86 × 81,998.60
  4. Step 4: Simplify right side
    250,472.84x = 30,812,356,446.40
  5. Step 5: Solve for x
    x = 30,812,356,446.40/250,472.84
  6. Step 6: Final answer
    x = 123,016.76

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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.