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Finding the Fourth Proportional to 269,310.30, 403,479.45 and 128,759.10

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Solution

The fourth proportional to 269,310.30, 403,479.45 and 128,759.10 is: 192,906.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,310.30 : 403,479.45 = 128,759.10 : x
  2. Step 2: Convert to fraction form
    269,310.30/403,479.45 = 128,759.10/x
  3. Step 3: Cross multiply
    269,310.30x = 403,479.45 × 128,759.10
  4. Step 4: Simplify right side
    269,310.30x = 51,951,650,850.50
  5. Step 5: Solve for x
    x = 51,951,650,850.50/269,310.30
  6. Step 6: Final answer
    x = 192,906.29

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1.5x scale

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.