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Finding the Fourth Proportional to 269,392, 404,104.20 and 82,405.12

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Solution

The fourth proportional to 269,392, 404,104.20 and 82,405.12 is: 123,612.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,392 : 404,104.20 = 82,405.12 : x
  2. Step 2: Convert to fraction form
    269,392/404,104.20 = 82,405.12/x
  3. Step 3: Cross multiply
    269,392x = 404,104.20 × 82,405.12
  4. Step 4: Simplify right side
    269,392x = 33,300,255,093.50
  5. Step 5: Solve for x
    x = 33,300,255,093.50/269,392
  6. Step 6: Final answer
    x = 123,612.64

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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.