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Finding the Fourth Proportional to 217,135.60, 325,687.70 and 67,372.07

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Solution

The fourth proportional to 217,135.60, 325,687.70 and 67,372.07 is: 101,053.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,135.60 : 325,687.70 = 67,372.07 : x
  2. Step 2: Convert to fraction form
    217,135.60/325,687.70 = 67,372.07/x
  3. Step 3: Cross multiply
    217,135.60x = 325,687.70 × 67,372.07
  4. Step 4: Simplify right side
    217,135.60x = 21,942,253,062.53
  5. Step 5: Solve for x
    x = 21,942,253,062.53/217,135.60
  6. Step 6: Final answer
    x = 101,053.23

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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.