Home / 432,079.30-647,600.55-221,608.90

Finding the Fourth Proportional to 432,079.30, 647,600.55 and 221,608.90

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Solution

The fourth proportional to 432,079.30, 647,600.55 and 221,608.90 is: 332,147.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,079.30 : 647,600.55 = 221,608.90 : x
  2. Step 2: Convert to fraction form
    432,079.30/647,600.55 = 221,608.90/x
  3. Step 3: Cross multiply
    432,079.30x = 647,600.55 × 221,608.90
  4. Step 4: Simplify right side
    432,079.30x = 143,514,045,524.90
  5. Step 5: Solve for x
    x = 143,514,045,524.90/432,079.30
  6. Step 6: Final answer
    x = 332,147.47

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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.