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Finding the Fourth Proportional to 217,746.60, 326,658.12 and 99,429.90

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Solution

The fourth proportional to 217,746.60, 326,658.12 and 99,429.90 is: 149,162.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,746.60 : 326,658.12 = 99,429.90 : x
  2. Step 2: Convert to fraction form
    217,746.60/326,658.12 = 99,429.90/x
  3. Step 3: Cross multiply
    217,746.60x = 326,658.12 × 99,429.90
  4. Step 4: Simplify right side
    217,746.60x = 32,479,584,205.79
  5. Step 5: Solve for x
    x = 32,479,584,205.79/217,746.60
  6. Step 6: Final answer
    x = 149,162.30

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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.