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Finding the Fourth Proportional to 327,331.80, 490,997.70 and 105,715.80

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Solution

The fourth proportional to 327,331.80, 490,997.70 and 105,715.80 is: 158,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,331.80 : 490,997.70 = 105,715.80 : x
  2. Step 2: Convert to fraction form
    327,331.80/490,997.70 = 105,715.80/x
  3. Step 3: Cross multiply
    327,331.80x = 490,997.70 × 105,715.80
  4. Step 4: Simplify right side
    327,331.80x = 51,906,214,653.66
  5. Step 5: Solve for x
    x = 51,906,214,653.66/327,331.80
  6. Step 6: Final answer
    x = 158,573.70

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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.