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Finding the Fourth Proportional to 245,691.27, 368,538.97 and 68,212.12

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Solution

The fourth proportional to 245,691.27, 368,538.97 and 68,212.12 is: 102,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,691.27 : 368,538.97 = 68,212.12 : x
  2. Step 2: Convert to fraction form
    245,691.27/368,538.97 = 68,212.12/x
  3. Step 3: Cross multiply
    245,691.27x = 368,538.97 × 68,212.12
  4. Step 4: Simplify right side
    245,691.27x = 25,138,824,446.32
  5. Step 5: Solve for x
    x = 25,138,824,446.32/245,691.27
  6. Step 6: Final answer
    x = 102,318.75

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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.