Home / 431,764.45-647,642.12-147,451.75

Finding the Fourth Proportional to 431,764.45, 647,642.12 and 147,451.75

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Solution

The fourth proportional to 431,764.45, 647,642.12 and 147,451.75 is: 221,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,764.45 : 647,642.12 = 147,451.75 : x
  2. Step 2: Convert to fraction form
    431,764.45/647,642.12 = 147,451.75/x
  3. Step 3: Cross multiply
    431,764.45x = 647,642.12 × 147,451.75
  4. Step 4: Simplify right side
    431,764.45x = 95,495,961,611.35
  5. Step 5: Solve for x
    x = 95,495,961,611.35/431,764.45
  6. Step 6: Final answer
    x = 221,176.07

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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.