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Finding the Fourth Proportional to 220,231.31, 303,940.58 and 123,451.65

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Solution

The fourth proportional to 220,231.31, 303,940.58 and 123,451.65 is: 170,375.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,231.31 : 303,940.58 = 123,451.65 : x
  2. Step 2: Convert to fraction form
    220,231.31/303,940.58 = 123,451.65/x
  3. Step 3: Cross multiply
    220,231.31x = 303,940.58 × 123,451.65
  4. Step 4: Simplify right side
    220,231.31x = 37,521,965,485.70
  5. Step 5: Solve for x
    x = 37,521,965,485.70/220,231.31
  6. Step 6: Final answer
    x = 170,375.26

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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.