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Finding the Fourth Proportional to 269,887.20, 404,879.40 and 112,131.60

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Solution

The fourth proportional to 269,887.20, 404,879.40 and 112,131.60 is: 168,217.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,887.20 : 404,879.40 = 112,131.60 : x
  2. Step 2: Convert to fraction form
    269,887.20/404,879.40 = 112,131.60/x
  3. Step 3: Cross multiply
    269,887.20x = 404,879.40 × 112,131.60
  4. Step 4: Simplify right side
    269,887.20x = 45,399,774,929.04
  5. Step 5: Solve for x
    x = 45,399,774,929.04/269,887.20
  6. Step 6: Final answer
    x = 168,217.59

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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.