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Finding the Fourth Proportional to 327,648.90, 491,473.53 and 90,991.56

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Solution

The fourth proportional to 327,648.90, 491,473.53 and 90,991.56 is: 136,487.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,648.90 : 491,473.53 = 90,991.56 : x
  2. Step 2: Convert to fraction form
    327,648.90/491,473.53 = 90,991.56/x
  3. Step 3: Cross multiply
    327,648.90x = 491,473.53 × 90,991.56
  4. Step 4: Simplify right side
    327,648.90x = 44,719,943,193.41
  5. Step 5: Solve for x
    x = 44,719,943,193.41/327,648.90
  6. Step 6: Final answer
    x = 136,487.39

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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.