Home / 324,780.29-487,139.11-100,080.39

Finding the Fourth Proportional to 324,780.29, 487,139.11 and 100,080.39

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Solution

The fourth proportional to 324,780.29, 487,139.11 and 100,080.39 is: 150,110.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,780.29 : 487,139.11 = 100,080.39 : x
  2. Step 2: Convert to fraction form
    324,780.29/487,139.11 = 100,080.39/x
  3. Step 3: Cross multiply
    324,780.29x = 487,139.11 × 100,080.39
  4. Step 4: Simplify right side
    324,780.29x = 48,753,072,113.05
  5. Step 5: Solve for x
    x = 48,753,072,113.05/324,780.29
  6. Step 6: Final answer
    x = 150,110.93

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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.