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Finding the Fourth Proportional to 217,959.49, 327,065.60 and 91,589.77

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Solution

The fourth proportional to 217,959.49, 327,065.60 and 91,589.77 is: 137,437.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,959.49 : 327,065.60 = 91,589.77 : x
  2. Step 2: Convert to fraction form
    217,959.49/327,065.60 = 91,589.77/x
  3. Step 3: Cross multiply
    217,959.49x = 327,065.60 × 91,589.77
  4. Step 4: Simplify right side
    217,959.49x = 29,955,863,078.91
  5. Step 5: Solve for x
    x = 29,955,863,078.91/217,959.49
  6. Step 6: Final answer
    x = 137,437.76

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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.