Home / 272,307.06-408,086.92-172,288.20

Finding the Fourth Proportional to 272,307.06, 408,086.92 and 172,288.20

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Solution

The fourth proportional to 272,307.06, 408,086.92 and 172,288.20 is: 258,195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,307.06 : 408,086.92 = 172,288.20 : x
  2. Step 2: Convert to fraction form
    272,307.06/408,086.92 = 172,288.20/x
  3. Step 3: Cross multiply
    272,307.06x = 408,086.92 × 172,288.20
  4. Step 4: Simplify right side
    272,307.06x = 70,308,560,028.90
  5. Step 5: Solve for x
    x = 70,308,560,028.90/272,307.06
  6. Step 6: Final answer
    x = 258,195.88

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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.