Home / 215,819.40-323,729.10-132,760.20

Finding the Fourth Proportional to 215,819.40, 323,729.10 and 132,760.20

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Solution

The fourth proportional to 215,819.40, 323,729.10 and 132,760.20 is: 199,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,819.40 : 323,729.10 = 132,760.20 : x
  2. Step 2: Convert to fraction form
    215,819.40/323,729.10 = 132,760.20/x
  3. Step 3: Cross multiply
    215,819.40x = 323,729.10 × 132,760.20
  4. Step 4: Simplify right side
    215,819.40x = 42,978,340,061.82
  5. Step 5: Solve for x
    x = 42,978,340,061.82/215,819.40
  6. Step 6: Final answer
    x = 199,140.30

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1.5x scale

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.