Home / 278,825.14-418,002.60-120,934.68

Finding the Fourth Proportional to 278,825.14, 418,002.60 and 120,934.68

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Solution

The fourth proportional to 278,825.14, 418,002.60 and 120,934.68 is: 181,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,825.14 : 418,002.60 = 120,934.68 : x
  2. Step 2: Convert to fraction form
    278,825.14/418,002.60 = 120,934.68/x
  3. Step 3: Cross multiply
    278,825.14x = 418,002.60 × 120,934.68
  4. Step 4: Simplify right side
    278,825.14x = 50,551,010,670.17
  5. Step 5: Solve for x
    x = 50,551,010,670.17/278,825.14
  6. Step 6: Final answer
    x = 181,300.05

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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.