Home / 345,458.39-518,338.17-120,979.85

Finding the Fourth Proportional to 345,458.39, 518,338.17 and 120,979.85

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Solution

The fourth proportional to 345,458.39, 518,338.17 and 120,979.85 is: 181,522.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,458.39 : 518,338.17 = 120,979.85 : x
  2. Step 2: Convert to fraction form
    345,458.39/518,338.17 = 120,979.85/x
  3. Step 3: Cross multiply
    345,458.39x = 518,338.17 × 120,979.85
  4. Step 4: Simplify right side
    345,458.39x = 62,708,471,464.18
  5. Step 5: Solve for x
    x = 62,708,471,464.18/345,458.39
  6. Step 6: Final answer
    x = 181,522.51

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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.