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Finding the Fourth Proportional to 274,645.80, 378,815.40 and 252,057.96

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Solution

The fourth proportional to 274,645.80, 378,815.40 and 252,057.96 is: 347,660.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,645.80 : 378,815.40 = 252,057.96 : x
  2. Step 2: Convert to fraction form
    274,645.80/378,815.40 = 252,057.96/x
  3. Step 3: Cross multiply
    274,645.80x = 378,815.40 × 252,057.96
  4. Step 4: Simplify right side
    274,645.80x = 95,483,436,940.58
  5. Step 5: Solve for x
    x = 95,483,436,940.58/274,645.80
  6. Step 6: Final answer
    x = 347,660.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.