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Finding the Fourth Proportional to 217,442.75, 326,186.43 and 75,287.81

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Solution

The fourth proportional to 217,442.75, 326,186.43 and 75,287.81 is: 112,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,442.75 : 326,186.43 = 75,287.81 : x
  2. Step 2: Convert to fraction form
    217,442.75/326,186.43 = 75,287.81/x
  3. Step 3: Cross multiply
    217,442.75x = 326,186.43 × 75,287.81
  4. Step 4: Simplify right side
    217,442.75x = 24,557,862,499.56
  5. Step 5: Solve for x
    x = 24,557,862,499.56/217,442.75
  6. Step 6: Final answer
    x = 112,939.44

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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.