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Finding the Fourth Proportional to 327,344.59, 491,015.56 and 90,686.48

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Solution

The fourth proportional to 327,344.59, 491,015.56 and 90,686.48 is: 136,029.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,344.59 : 491,015.56 = 90,686.48 : x
  2. Step 2: Convert to fraction form
    327,344.59/491,015.56 = 90,686.48/x
  3. Step 3: Cross multiply
    327,344.59x = 491,015.56 × 90,686.48
  4. Step 4: Simplify right side
    327,344.59x = 44,528,472,761.63
  5. Step 5: Solve for x
    x = 44,528,472,761.63/327,344.59
  6. Step 6: Final answer
    x = 136,029.36

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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.