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Finding the Fourth Proportional to 215,863.27, 323,795.71 and 66,102.97

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Solution

The fourth proportional to 215,863.27, 323,795.71 and 66,102.97 is: 99,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,863.27 : 323,795.71 = 66,102.97 : x
  2. Step 2: Convert to fraction form
    215,863.27/323,795.71 = 66,102.97/x
  3. Step 3: Cross multiply
    215,863.27x = 323,795.71 × 66,102.97
  4. Step 4: Simplify right side
    215,863.27x = 21,403,858,104.26
  5. Step 5: Solve for x
    x = 21,403,858,104.26/215,863.27
  6. Step 6: Final answer
    x = 99,154.70

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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.