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Finding the Fourth Proportional to 327,274.72, 490,912.08 and 90,617.38

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Solution

The fourth proportional to 327,274.72, 490,912.08 and 90,617.38 is: 135,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,274.72 : 490,912.08 = 90,617.38 : x
  2. Step 2: Convert to fraction form
    327,274.72/490,912.08 = 90,617.38/x
  3. Step 3: Cross multiply
    327,274.72x = 490,912.08 × 90,617.38
  4. Step 4: Simplify right side
    327,274.72x = 44,485,166,499.95
  5. Step 5: Solve for x
    x = 44,485,166,499.95/327,274.72
  6. Step 6: Final answer
    x = 135,926.07

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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.