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Finding the Fourth Proportional to 169,660.80, 254,491.20 and 165,286.80

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Solution

The fourth proportional to 169,660.80, 254,491.20 and 165,286.80 is: 247,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,660.80 : 254,491.20 = 165,286.80 : x
  2. Step 2: Convert to fraction form
    169,660.80/254,491.20 = 165,286.80/x
  3. Step 3: Cross multiply
    169,660.80x = 254,491.20 × 165,286.80
  4. Step 4: Simplify right side
    169,660.80x = 42,064,036,076.16
  5. Step 5: Solve for x
    x = 42,064,036,076.16/169,660.80
  6. Step 6: Final answer
    x = 247,930.20

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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.