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Finding the Fourth Proportional to 275,209.80, 412,620.30 and 125,521.80

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Solution

The fourth proportional to 275,209.80, 412,620.30 and 125,521.80 is: 188,194.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,209.80 : 412,620.30 = 125,521.80 : x
  2. Step 2: Convert to fraction form
    275,209.80/412,620.30 = 125,521.80/x
  3. Step 3: Cross multiply
    275,209.80x = 412,620.30 × 125,521.80
  4. Step 4: Simplify right side
    275,209.80x = 51,792,842,772.54
  5. Step 5: Solve for x
    x = 51,792,842,772.54/275,209.80
  6. Step 6: Final answer
    x = 188,194.04

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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.