Home / 309,204.24-462,872.69-279,636

Finding the Fourth Proportional to 309,204.24, 462,872.69 and 279,636

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Solution

The fourth proportional to 309,204.24, 462,872.69 and 279,636 is: 418,609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,204.24 : 462,872.69 = 279,636 : x
  2. Step 2: Convert to fraction form
    309,204.24/462,872.69 = 279,636/x
  3. Step 3: Cross multiply
    309,204.24x = 462,872.69 × 279,636
  4. Step 4: Simplify right side
    309,204.24x = 129,435,867,540.84
  5. Step 5: Solve for x
    x = 129,435,867,540.84/309,204.24
  6. Step 6: Final answer
    x = 418,609.61

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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.