Home / 276,640.20-415,349.10-217,542.60

Finding the Fourth Proportional to 276,640.20, 415,349.10 and 217,542.60

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Solution

The fourth proportional to 276,640.20, 415,349.10 and 217,542.60 is: 326,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,640.20 : 415,349.10 = 217,542.60 : x
  2. Step 2: Convert to fraction form
    276,640.20/415,349.10 = 217,542.60/x
  3. Step 3: Cross multiply
    276,640.20x = 415,349.10 × 217,542.60
  4. Step 4: Simplify right side
    276,640.20x = 90,356,123,121.66
  5. Step 5: Solve for x
    x = 90,356,123,121.66/276,640.20
  6. Step 6: Final answer
    x = 326,619.64

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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.