Home / 431,979.21-647,944.56-132,458.94

Finding the Fourth Proportional to 431,979.21, 647,944.56 and 132,458.94

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Solution

The fourth proportional to 431,979.21, 647,944.56 and 132,458.94 is: 198,680.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,979.21 : 647,944.56 = 132,458.94 : x
  2. Step 2: Convert to fraction form
    431,979.21/647,944.56 = 132,458.94/x
  3. Step 3: Cross multiply
    431,979.21x = 647,944.56 × 132,458.94
  4. Step 4: Simplify right side
    431,979.21x = 85,826,049,596.37
  5. Step 5: Solve for x
    x = 85,826,049,596.37/431,979.21
  6. Step 6: Final answer
    x = 198,680.97

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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.