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Finding the Fourth Proportional to 206,815.85, 310,224.02 and 64,661.87

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Solution

The fourth proportional to 206,815.85, 310,224.02 and 64,661.87 is: 96,992.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,815.85 : 310,224.02 = 64,661.87 : x
  2. Step 2: Convert to fraction form
    206,815.85/310,224.02 = 64,661.87/x
  3. Step 3: Cross multiply
    206,815.85x = 310,224.02 × 64,661.87
  4. Step 4: Simplify right side
    206,815.85x = 20,059,665,252.12
  5. Step 5: Solve for x
    x = 20,059,665,252.12/206,815.85
  6. Step 6: Final answer
    x = 96,992.88

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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.