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Finding the Fourth Proportional to 269,193.20, 403,789.80 and 206,207.60

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Solution

The fourth proportional to 269,193.20, 403,789.80 and 206,207.60 is: 309,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,193.20 : 403,789.80 = 206,207.60 : x
  2. Step 2: Convert to fraction form
    269,193.20/403,789.80 = 206,207.60/x
  3. Step 3: Cross multiply
    269,193.20x = 403,789.80 × 206,207.60
  4. Step 4: Simplify right side
    269,193.20x = 83,264,525,562.48
  5. Step 5: Solve for x
    x = 83,264,525,562.48/269,193.20
  6. Step 6: Final answer
    x = 309,311.40

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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.