Home / 279,864.48-419,819.28-87,725.76

Finding the Fourth Proportional to 279,864.48, 419,819.28 and 87,725.76

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Solution

The fourth proportional to 279,864.48, 419,819.28 and 87,725.76 is: 131,595.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,864.48 : 419,819.28 = 87,725.76 : x
  2. Step 2: Convert to fraction form
    279,864.48/419,819.28 = 87,725.76/x
  3. Step 3: Cross multiply
    279,864.48x = 419,819.28 × 87,725.76
  4. Step 4: Simplify right side
    279,864.48x = 36,828,965,400.65
  5. Step 5: Solve for x
    x = 36,828,965,400.65/279,864.48
  6. Step 6: Final answer
    x = 131,595.71

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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.