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Finding the Fourth Proportional to 217,896.88, 326,861.88 and 84,719.92

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Solution

The fourth proportional to 217,896.88, 326,861.88 and 84,719.92 is: 127,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,896.88 : 326,861.88 = 84,719.92 : x
  2. Step 2: Convert to fraction form
    217,896.88/326,861.88 = 84,719.92/x
  3. Step 3: Cross multiply
    217,896.88x = 326,861.88 × 84,719.92
  4. Step 4: Simplify right side
    217,896.88x = 27,691,712,324.65
  5. Step 5: Solve for x
    x = 27,691,712,324.65/217,896.88
  6. Step 6: Final answer
    x = 127,086.32

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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.