Home / 215,255.26-322,438.20-126,240.72

Finding the Fourth Proportional to 215,255.26, 322,438.20 and 126,240.72

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Solution

The fourth proportional to 215,255.26, 322,438.20 and 126,240.72 is: 189,100.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,255.26 : 322,438.20 = 126,240.72 : x
  2. Step 2: Convert to fraction form
    215,255.26/322,438.20 = 126,240.72/x
  3. Step 3: Cross multiply
    215,255.26x = 322,438.20 × 126,240.72
  4. Step 4: Simplify right side
    215,255.26x = 40,704,830,523.50
  5. Step 5: Solve for x
    x = 40,704,830,523.50/215,255.26
  6. Step 6: Final answer
    x = 189,100.28

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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.