Home / 274,380.80-378,689.28-161,231.36

Finding the Fourth Proportional to 274,380.80, 378,689.28 and 161,231.36

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Solution

The fourth proportional to 274,380.80, 378,689.28 and 161,231.36 is: 222,525.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,380.80 : 378,689.28 = 161,231.36 : x
  2. Step 2: Convert to fraction form
    274,380.80/378,689.28 = 161,231.36/x
  3. Step 3: Cross multiply
    274,380.80x = 378,689.28 × 161,231.36
  4. Step 4: Simplify right side
    274,380.80x = 61,056,587,631.82
  5. Step 5: Solve for x
    x = 61,056,587,631.82/274,380.80
  6. Step 6: Final answer
    x = 222,525.00

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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.