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Finding the Fourth Proportional to 327,780.80, 491,325.60 and 187,236.80

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Solution

The fourth proportional to 327,780.80, 491,325.60 and 187,236.80 is: 280,657.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,780.80 : 491,325.60 = 187,236.80 : x
  2. Step 2: Convert to fraction form
    327,780.80/491,325.60 = 187,236.80/x
  3. Step 3: Cross multiply
    327,780.80x = 491,325.60 × 187,236.80
  4. Step 4: Simplify right side
    327,780.80x = 91,994,233,102.08
  5. Step 5: Solve for x
    x = 91,994,233,102.08/327,780.80
  6. Step 6: Final answer
    x = 280,657.78

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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.