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Finding the Fourth Proportional to 206,717.40, 310,076.10 and 88,400.70

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Solution

The fourth proportional to 206,717.40, 310,076.10 and 88,400.70 is: 132,601.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,717.40 : 310,076.10 = 88,400.70 : x
  2. Step 2: Convert to fraction form
    206,717.40/310,076.10 = 88,400.70/x
  3. Step 3: Cross multiply
    206,717.40x = 310,076.10 × 88,400.70
  4. Step 4: Simplify right side
    206,717.40x = 27,410,944,293.27
  5. Step 5: Solve for x
    x = 27,410,944,293.27/206,717.40
  6. Step 6: Final answer
    x = 132,601.05

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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.