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Finding the Fourth Proportional to 327,485.10, 491,486.85 and 127,901.10

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Solution

The fourth proportional to 327,485.10, 491,486.85 and 127,901.10 is: 191,952.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,485.10 : 491,486.85 = 127,901.10 : x
  2. Step 2: Convert to fraction form
    327,485.10/491,486.85 = 127,901.10/x
  3. Step 3: Cross multiply
    327,485.10x = 491,486.85 × 127,901.10
  4. Step 4: Simplify right side
    327,485.10x = 62,861,708,750.54
  5. Step 5: Solve for x
    x = 62,861,708,750.54/327,485.10
  6. Step 6: Final answer
    x = 191,952.88

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1.5x scale

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.