Home / 431,455.54-647,184.75-131,934.90

Finding the Fourth Proportional to 431,455.54, 647,184.75 and 131,934.90

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Solution

The fourth proportional to 431,455.54, 647,184.75 and 131,934.90 is: 197,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,455.54 : 647,184.75 = 131,934.90 : x
  2. Step 2: Convert to fraction form
    431,455.54/647,184.75 = 131,934.90/x
  3. Step 3: Cross multiply
    431,455.54x = 647,184.75 × 131,934.90
  4. Step 4: Simplify right side
    431,455.54x = 85,386,255,272.78
  5. Step 5: Solve for x
    x = 85,386,255,272.78/431,455.54
  6. Step 6: Final answer
    x = 197,902.79

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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.