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Finding the Fourth Proportional to 206,568.07, 309,855.48 and 71,636.38

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Solution

The fourth proportional to 206,568.07, 309,855.48 and 71,636.38 is: 107,455.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,568.07 : 309,855.48 = 71,636.38 : x
  2. Step 2: Convert to fraction form
    206,568.07/309,855.48 = 71,636.38/x
  3. Step 3: Cross multiply
    206,568.07x = 309,855.48 × 71,636.38
  4. Step 4: Simplify right side
    206,568.07x = 22,196,924,910.36
  5. Step 5: Solve for x
    x = 22,196,924,910.36/206,568.07
  6. Step 6: Final answer
    x = 107,455.74

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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.