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Finding the Fourth Proportional to 217,138.73, 325,712.16 and 67,383.90

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Solution

The fourth proportional to 217,138.73, 325,712.16 and 67,383.90 is: 101,077.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,138.73 : 325,712.16 = 67,383.90 : x
  2. Step 2: Convert to fraction form
    217,138.73/325,712.16 = 67,383.90/x
  3. Step 3: Cross multiply
    217,138.73x = 325,712.16 × 67,383.90
  4. Step 4: Simplify right side
    217,138.73x = 21,947,755,618.22
  5. Step 5: Solve for x
    x = 21,947,755,618.22/217,138.73
  6. Step 6: Final answer
    x = 101,077.11

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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.