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Finding the Fourth Proportional to 321,695.92, 482,379 and 169,974.48

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Solution

The fourth proportional to 321,695.92, 482,379 and 169,974.48 is: 254,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,695.92 : 482,379 = 169,974.48 : x
  2. Step 2: Convert to fraction form
    321,695.92/482,379 = 169,974.48/x
  3. Step 3: Cross multiply
    321,695.92x = 482,379 × 169,974.48
  4. Step 4: Simplify right side
    321,695.92x = 81,992,119,687.92
  5. Step 5: Solve for x
    x = 81,992,119,687.92/321,695.92
  6. Step 6: Final answer
    x = 254,874.60

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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.