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Finding the Fourth Proportional to 269,170.80, 403,759.40 and 115,276.04

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Solution

The fourth proportional to 269,170.80, 403,759.40 and 115,276.04 is: 172,915.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,170.80 : 403,759.40 = 115,276.04 : x
  2. Step 2: Convert to fraction form
    269,170.80/403,759.40 = 115,276.04/x
  3. Step 3: Cross multiply
    269,170.80x = 403,759.40 × 115,276.04
  4. Step 4: Simplify right side
    269,170.80x = 46,543,784,744.78
  5. Step 5: Solve for x
    x = 46,543,784,744.78/269,170.80
  6. Step 6: Final answer
    x = 172,915.43

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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.