Home / 278,932.58-418,163.76-121,042.12

Finding the Fourth Proportional to 278,932.58, 418,163.76 and 121,042.12

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Solution

The fourth proportional to 278,932.58, 418,163.76 and 121,042.12 is: 181,461.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,932.58 : 418,163.76 = 121,042.12 : x
  2. Step 2: Convert to fraction form
    278,932.58/418,163.76 = 121,042.12/x
  3. Step 3: Cross multiply
    278,932.58x = 418,163.76 × 121,042.12
  4. Step 4: Simplify right side
    278,932.58x = 50,615,428,017.57
  5. Step 5: Solve for x
    x = 50,615,428,017.57/278,932.58
  6. Step 6: Final answer
    x = 181,461.15

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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.