Home / 279,268.12-418,839.09-79,584.22

Finding the Fourth Proportional to 279,268.12, 418,839.09 and 79,584.22

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Solution

The fourth proportional to 279,268.12, 418,839.09 and 79,584.22 is: 119,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,268.12 : 418,839.09 = 79,584.22 : x
  2. Step 2: Convert to fraction form
    279,268.12/418,839.09 = 79,584.22/x
  3. Step 3: Cross multiply
    279,268.12x = 418,839.09 × 79,584.22
  4. Step 4: Simplify right side
    279,268.12x = 33,332,982,283.16
  5. Step 5: Solve for x
    x = 33,332,982,283.16/279,268.12
  6. Step 6: Final answer
    x = 119,358.35

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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.