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Finding the Fourth Proportional to 275,478.80, 412,429.80 and 169,584.80

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Solution

The fourth proportional to 275,478.80, 412,429.80 and 169,584.80 is: 253,891.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,478.80 : 412,429.80 = 169,584.80 : x
  2. Step 2: Convert to fraction form
    275,478.80/412,429.80 = 169,584.80/x
  3. Step 3: Cross multiply
    275,478.80x = 412,429.80 × 169,584.80
  4. Step 4: Simplify right side
    275,478.80x = 69,941,825,147.04
  5. Step 5: Solve for x
    x = 69,941,825,147.04/275,478.80
  6. Step 6: Final answer
    x = 253,891.86

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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.