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Finding the Fourth Proportional to 217,879.27, 326,819.16 and 68,120.35

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Solution

The fourth proportional to 217,879.27, 326,819.16 and 68,120.35 is: 102,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,879.27 : 326,819.16 = 68,120.35 : x
  2. Step 2: Convert to fraction form
    217,879.27/326,819.16 = 68,120.35/x
  3. Step 3: Cross multiply
    217,879.27x = 326,819.16 × 68,120.35
  4. Step 4: Simplify right side
    217,879.27x = 22,263,034,102.11
  5. Step 5: Solve for x
    x = 22,263,034,102.11/217,879.27
  6. Step 6: Final answer
    x = 102,180.60

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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.