Home / 279,809.12-386,125.20-152,481.92

Finding the Fourth Proportional to 279,809.12, 386,125.20 and 152,481.92

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Solution

The fourth proportional to 279,809.12, 386,125.20 and 152,481.92 is: 210,418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,809.12 : 386,125.20 = 152,481.92 : x
  2. Step 2: Convert to fraction form
    279,809.12/386,125.20 = 152,481.92/x
  3. Step 3: Cross multiply
    279,809.12x = 386,125.20 × 152,481.92
  4. Step 4: Simplify right side
    279,809.12x = 58,877,111,856.38
  5. Step 5: Solve for x
    x = 58,877,111,856.38/279,809.12
  6. Step 6: Final answer
    x = 210,418.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.