Home / 278,825.22-418,002.71-120,934.76

Finding the Fourth Proportional to 278,825.22, 418,002.71 and 120,934.76

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Solution

The fourth proportional to 278,825.22, 418,002.71 and 120,934.76 is: 181,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,825.22 : 418,002.71 = 120,934.76 : x
  2. Step 2: Convert to fraction form
    278,825.22/418,002.71 = 120,934.76/x
  3. Step 3: Cross multiply
    278,825.22x = 418,002.71 × 120,934.76
  4. Step 4: Simplify right side
    278,825.22x = 50,551,054,718.51
  5. Step 5: Solve for x
    x = 50,551,054,718.51/278,825.22
  6. Step 6: Final answer
    x = 181,300.15

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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.