Home / 278,825.28-418,002.82-120,934.88

Finding the Fourth Proportional to 278,825.28, 418,002.82 and 120,934.88

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Solution

The fourth proportional to 278,825.28, 418,002.82 and 120,934.88 is: 181,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,825.28 : 418,002.82 = 120,934.88 : x
  2. Step 2: Convert to fraction form
    278,825.28/418,002.82 = 120,934.88/x
  3. Step 3: Cross multiply
    278,825.28x = 418,002.82 × 120,934.88
  4. Step 4: Simplify right side
    278,825.28x = 50,551,120,876.36
  5. Step 5: Solve for x
    x = 50,551,120,876.36/278,825.28
  6. Step 6: Final answer
    x = 181,300.35

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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.