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Finding the Fourth Proportional to 538,221.20, 806,640.60 and 327,635.60

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Solution

The fourth proportional to 538,221.20, 806,640.60 and 327,635.60 is: 491,032.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,221.20 : 806,640.60 = 327,635.60 : x
  2. Step 2: Convert to fraction form
    538,221.20/806,640.60 = 327,635.60/x
  3. Step 3: Cross multiply
    538,221.20x = 806,640.60 × 327,635.60
  4. Step 4: Simplify right side
    538,221.20x = 264,284,176,965.36
  5. Step 5: Solve for x
    x = 264,284,176,965.36/538,221.20
  6. Step 6: Final answer
    x = 491,032.64

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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.