Home / 279,033.10-418,540.31-121,261.56

Finding the Fourth Proportional to 279,033.10, 418,540.31 and 121,261.56

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Solution

The fourth proportional to 279,033.10, 418,540.31 and 121,261.56 is: 181,888.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,033.10 : 418,540.31 = 121,261.56 : x
  2. Step 2: Convert to fraction form
    279,033.10/418,540.31 = 121,261.56/x
  3. Step 3: Cross multiply
    279,033.10x = 418,540.31 × 121,261.56
  4. Step 4: Simplify right side
    279,033.10x = 50,752,849,874.48
  5. Step 5: Solve for x
    x = 50,752,849,874.48/279,033.10
  6. Step 6: Final answer
    x = 181,888.28

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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.