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Finding the Fourth Proportional to 218,010.30, 300,857.13 and 122,511.30

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Solution

The fourth proportional to 218,010.30, 300,857.13 and 122,511.30 is: 169,067.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,010.30 : 300,857.13 = 122,511.30 : x
  2. Step 2: Convert to fraction form
    218,010.30/300,857.13 = 122,511.30/x
  3. Step 3: Cross multiply
    218,010.30x = 300,857.13 × 122,511.30
  4. Step 4: Simplify right side
    218,010.30x = 36,858,398,110.57
  5. Step 5: Solve for x
    x = 36,858,398,110.57/218,010.30
  6. Step 6: Final answer
    x = 169,067.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.