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Finding the Fourth Proportional to 327,121.80, 490,682.70 and 303,502.20

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Solution

The fourth proportional to 327,121.80, 490,682.70 and 303,502.20 is: 455,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,121.80 : 490,682.70 = 303,502.20 : x
  2. Step 2: Convert to fraction form
    327,121.80/490,682.70 = 303,502.20/x
  3. Step 3: Cross multiply
    327,121.80x = 490,682.70 × 303,502.20
  4. Step 4: Simplify right side
    327,121.80x = 148,923,278,951.94
  5. Step 5: Solve for x
    x = 148,923,278,951.94/327,121.80
  6. Step 6: Final answer
    x = 455,253.30

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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.