Home / 272,514.38-408,786.14-85,540.46

Finding the Fourth Proportional to 272,514.38, 408,786.14 and 85,540.46

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Solution

The fourth proportional to 272,514.38, 408,786.14 and 85,540.46 is: 128,315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,514.38 : 408,786.14 = 85,540.46 : x
  2. Step 2: Convert to fraction form
    272,514.38/408,786.14 = 85,540.46/x
  3. Step 3: Cross multiply
    272,514.38x = 408,786.14 × 85,540.46
  4. Step 4: Simplify right side
    272,514.38x = 34,967,752,627.14
  5. Step 5: Solve for x
    x = 34,967,752,627.14/272,514.38
  6. Step 6: Final answer
    x = 128,315.26

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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.