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Finding the Fourth Proportional to 269,947.23, 404,879.23 and 90,035.80

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Solution

The fourth proportional to 269,947.23, 404,879.23 and 90,035.80 is: 135,039.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,947.23 : 404,879.23 = 90,035.80 : x
  2. Step 2: Convert to fraction form
    269,947.23/404,879.23 = 90,035.80/x
  3. Step 3: Cross multiply
    269,947.23x = 404,879.23 × 90,035.80
  4. Step 4: Simplify right side
    269,947.23x = 36,453,625,376.43
  5. Step 5: Solve for x
    x = 36,453,625,376.43/269,947.23
  6. Step 6: Final answer
    x = 135,039.82

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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.