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Finding the Fourth Proportional to 275,815.80, 413,665.62 and 126,013.56

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Solution

The fourth proportional to 275,815.80, 413,665.62 and 126,013.56 is: 188,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,815.80 : 413,665.62 = 126,013.56 : x
  2. Step 2: Convert to fraction form
    275,815.80/413,665.62 = 126,013.56/x
  3. Step 3: Cross multiply
    275,815.80x = 413,665.62 × 126,013.56
  4. Step 4: Simplify right side
    275,815.80x = 52,127,477,425.81
  5. Step 5: Solve for x
    x = 52,127,477,425.81/275,815.80
  6. Step 6: Final answer
    x = 188,993.80

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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.