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Finding the Fourth Proportional to 206,844.60, 310,266.90 and 197,221.80

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Solution

The fourth proportional to 206,844.60, 310,266.90 and 197,221.80 is: 295,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,844.60 : 310,266.90 = 197,221.80 : x
  2. Step 2: Convert to fraction form
    206,844.60/310,266.90 = 197,221.80/x
  3. Step 3: Cross multiply
    206,844.60x = 310,266.90 × 197,221.80
  4. Step 4: Simplify right side
    206,844.60x = 61,191,396,498.42
  5. Step 5: Solve for x
    x = 61,191,396,498.42/206,844.60
  6. Step 6: Final answer
    x = 295,832.70

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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.