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Finding the Fourth Proportional to 217,252.76, 299,808.41 and 121,759.43

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Solution

The fourth proportional to 217,252.76, 299,808.41 and 121,759.43 is: 168,027.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,252.76 : 299,808.41 = 121,759.43 : x
  2. Step 2: Convert to fraction form
    217,252.76/299,808.41 = 121,759.43/x
  3. Step 3: Cross multiply
    217,252.76x = 299,808.41 × 121,759.43
  4. Step 4: Simplify right side
    217,252.76x = 36,504,499,002.97
  5. Step 5: Solve for x
    x = 36,504,499,002.97/217,252.76
  6. Step 6: Final answer
    x = 168,027.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.