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Finding the Fourth Proportional to 269,919.40, 404,879.10 and 82,940.20

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Solution

The fourth proportional to 269,919.40, 404,879.10 and 82,940.20 is: 124,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,919.40 : 404,879.10 = 82,940.20 : x
  2. Step 2: Convert to fraction form
    269,919.40/404,879.10 = 82,940.20/x
  3. Step 3: Cross multiply
    269,919.40x = 404,879.10 × 82,940.20
  4. Step 4: Simplify right side
    269,919.40x = 33,580,753,529.82
  5. Step 5: Solve for x
    x = 33,580,753,529.82/269,919.40
  6. Step 6: Final answer
    x = 124,410.30

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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.