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Finding the Fourth Proportional to 217,110.30, 325,723.05 and 76,854.30

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Solution

The fourth proportional to 217,110.30, 325,723.05 and 76,854.30 is: 115,301.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,110.30 : 325,723.05 = 76,854.30 : x
  2. Step 2: Convert to fraction form
    217,110.30/325,723.05 = 76,854.30/x
  3. Step 3: Cross multiply
    217,110.30x = 325,723.05 × 76,854.30
  4. Step 4: Simplify right side
    217,110.30x = 25,033,217,001.62
  5. Step 5: Solve for x
    x = 25,033,217,001.62/217,110.30
  6. Step 6: Final answer
    x = 115,301.84

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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.