Home / 215,254.26-322,436.70-126,239.72

Finding the Fourth Proportional to 215,254.26, 322,436.70 and 126,239.72

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Solution

The fourth proportional to 215,254.26, 322,436.70 and 126,239.72 is: 189,098.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,254.26 : 322,436.70 = 126,239.72 : x
  2. Step 2: Convert to fraction form
    215,254.26/322,436.70 = 126,239.72/x
  3. Step 3: Cross multiply
    215,254.26x = 322,436.70 × 126,239.72
  4. Step 4: Simplify right side
    215,254.26x = 40,704,317,113.54
  5. Step 5: Solve for x
    x = 40,704,317,113.54/215,254.26
  6. Step 6: Final answer
    x = 189,098.78

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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.