Home / 431,514.24-647,388.90-131,988.18

Finding the Fourth Proportional to 431,514.24, 647,388.90 and 131,988.18

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Solution

The fourth proportional to 431,514.24, 647,388.90 and 131,988.18 is: 198,018.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,514.24 : 647,388.90 = 131,988.18 : x
  2. Step 2: Convert to fraction form
    431,514.24/647,388.90 = 131,988.18/x
  3. Step 3: Cross multiply
    431,514.24x = 647,388.90 × 131,988.18
  4. Step 4: Simplify right side
    431,514.24x = 85,447,682,663.20
  5. Step 5: Solve for x
    x = 85,447,682,663.20/431,514.24
  6. Step 6: Final answer
    x = 198,018.22

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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.