Home / 278,820.29-418,239.53-132,728.50

Finding the Fourth Proportional to 278,820.29, 418,239.53 and 132,728.50

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Solution

The fourth proportional to 278,820.29, 418,239.53 and 132,728.50 is: 199,097.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,820.29 : 418,239.53 = 132,728.50 : x
  2. Step 2: Convert to fraction form
    278,820.29/418,239.53 = 132,728.50/x
  3. Step 3: Cross multiply
    278,820.29x = 418,239.53 × 132,728.50
  4. Step 4: Simplify right side
    278,820.29x = 55,512,304,264.90
  5. Step 5: Solve for x
    x = 55,512,304,264.90/278,820.29
  6. Step 6: Final answer
    x = 199,097.08

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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.