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Finding the Fourth Proportional to 218,269.68, 327,010.51 and 91,683.35

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Solution

The fourth proportional to 218,269.68, 327,010.51 and 91,683.35 is: 137,359.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,269.68 : 327,010.51 = 91,683.35 : x
  2. Step 2: Convert to fraction form
    218,269.68/327,010.51 = 91,683.35/x
  3. Step 3: Cross multiply
    218,269.68x = 327,010.51 × 91,683.35
  4. Step 4: Simplify right side
    218,269.68x = 29,981,419,042.01
  5. Step 5: Solve for x
    x = 29,981,419,042.01/218,269.68
  6. Step 6: Final answer
    x = 137,359.52

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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.