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Finding the Fourth Proportional to 206,857.60, 310,322.85 and 73,815.10

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Solution

The fourth proportional to 206,857.60, 310,322.85 and 73,815.10 is: 110,735.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,857.60 : 310,322.85 = 73,815.10 : x
  2. Step 2: Convert to fraction form
    206,857.60/310,322.85 = 73,815.10/x
  3. Step 3: Cross multiply
    206,857.60x = 310,322.85 × 73,815.10
  4. Step 4: Simplify right side
    206,857.60x = 22,906,512,205.04
  5. Step 5: Solve for x
    x = 22,906,512,205.04/206,857.60
  6. Step 6: Final answer
    x = 110,735.66

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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.