Home / 279,890.87-386,234.82-159,015.38

Finding the Fourth Proportional to 279,890.87, 386,234.82 and 159,015.38

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Solution

The fourth proportional to 279,890.87, 386,234.82 and 159,015.38 is: 219,432.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,890.87 : 386,234.82 = 159,015.38 : x
  2. Step 2: Convert to fraction form
    279,890.87/386,234.82 = 159,015.38/x
  3. Step 3: Cross multiply
    279,890.87x = 386,234.82 × 159,015.38
  4. Step 4: Simplify right side
    279,890.87x = 61,417,274,740.36
  5. Step 5: Solve for x
    x = 61,417,274,740.36/279,890.87
  6. Step 6: Final answer
    x = 219,432.94

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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.