Home / 276,949.78-415,521.33-87,439.48

Finding the Fourth Proportional to 276,949.78, 415,521.33 and 87,439.48

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Solution

The fourth proportional to 276,949.78, 415,521.33 and 87,439.48 is: 131,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,949.78 : 415,521.33 = 87,439.48 : x
  2. Step 2: Convert to fraction form
    276,949.78/415,521.33 = 87,439.48/x
  3. Step 3: Cross multiply
    276,949.78x = 415,521.33 × 87,439.48
  4. Step 4: Simplify right side
    276,949.78x = 36,332,969,024.11
  5. Step 5: Solve for x
    x = 36,332,969,024.11/276,949.78
  6. Step 6: Final answer
    x = 131,189.74

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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.