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Finding the Fourth Proportional to 217,081.80, 325,469.10 and 83,910.60

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Solution

The fourth proportional to 217,081.80, 325,469.10 and 83,910.60 is: 125,806.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,081.80 : 325,469.10 = 83,910.60 : x
  2. Step 2: Convert to fraction form
    217,081.80/325,469.10 = 83,910.60/x
  3. Step 3: Cross multiply
    217,081.80x = 325,469.10 × 83,910.60
  4. Step 4: Simplify right side
    217,081.80x = 27,310,307,462.46
  5. Step 5: Solve for x
    x = 27,310,307,462.46/217,081.80
  6. Step 6: Final answer
    x = 125,806.53

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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.