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Finding the Fourth Proportional to 327,393.48, 490,991.52 and 215,069.16

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Solution

The fourth proportional to 327,393.48, 490,991.52 and 215,069.16 is: 322,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,393.48 : 490,991.52 = 215,069.16 : x
  2. Step 2: Convert to fraction form
    327,393.48/490,991.52 = 215,069.16/x
  3. Step 3: Cross multiply
    327,393.48x = 490,991.52 × 215,069.16
  4. Step 4: Simplify right side
    327,393.48x = 105,597,133,773.52
  5. Step 5: Solve for x
    x = 105,597,133,773.52/327,393.48
  6. Step 6: Final answer
    x = 322,538.90

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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.