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Finding the Fourth Proportional to 220,409.25, 304,198.01 and 134,418.12

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Solution

The fourth proportional to 220,409.25, 304,198.01 and 134,418.12 is: 185,517.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,409.25 : 304,198.01 = 134,418.12 : x
  2. Step 2: Convert to fraction form
    220,409.25/304,198.01 = 134,418.12/x
  3. Step 3: Cross multiply
    220,409.25x = 304,198.01 × 134,418.12
  4. Step 4: Simplify right side
    220,409.25x = 40,889,723,939.85
  5. Step 5: Solve for x
    x = 40,889,723,939.85/220,409.25
  6. Step 6: Final answer
    x = 185,517.28

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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.