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Finding the Fourth Proportional to 217,855.22, 326,826.57 and 99,494.78

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Solution

The fourth proportional to 217,855.22, 326,826.57 and 99,494.78 is: 149,262.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,855.22 : 326,826.57 = 99,494.78 : x
  2. Step 2: Convert to fraction form
    217,855.22/326,826.57 = 99,494.78/x
  3. Step 3: Cross multiply
    217,855.22x = 326,826.57 × 99,494.78
  4. Step 4: Simplify right side
    217,855.22x = 32,517,537,680.30
  5. Step 5: Solve for x
    x = 32,517,537,680.30/217,855.22
  6. Step 6: Final answer
    x = 149,262.15

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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.