Home / 664,531.20-996,942.60-215,175.60

Finding the Fourth Proportional to 664,531.20, 996,942.60 and 215,175.60

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Solution

The fourth proportional to 664,531.20, 996,942.60 and 215,175.60 is: 322,810.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,531.20 : 996,942.60 = 215,175.60 : x
  2. Step 2: Convert to fraction form
    664,531.20/996,942.60 = 215,175.60/x
  3. Step 3: Cross multiply
    664,531.20x = 996,942.60 × 215,175.60
  4. Step 4: Simplify right side
    664,531.20x = 214,517,722,120.56
  5. Step 5: Solve for x
    x = 214,517,722,120.56/664,531.20
  6. Step 6: Final answer
    x = 322,810.61

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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.