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Finding the Fourth Proportional to 272,296.77, 408,018.42 and 172,245.62

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Solution

The fourth proportional to 272,296.77, 408,018.42 and 172,245.62 is: 258,098.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,296.77 : 408,018.42 = 172,245.62 : x
  2. Step 2: Convert to fraction form
    272,296.77/408,018.42 = 172,245.62/x
  3. Step 3: Cross multiply
    272,296.77x = 408,018.42 × 172,245.62
  4. Step 4: Simplify right side
    272,296.77x = 70,279,383,684.23
  5. Step 5: Solve for x
    x = 70,279,383,684.23/272,296.77
  6. Step 6: Final answer
    x = 258,098.48

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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.