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Finding the Fourth Proportional to 220,755.49, 304,621.75 and 123,940.43

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Solution

The fourth proportional to 220,755.49, 304,621.75 and 123,940.43 is: 171,026.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,755.49 : 304,621.75 = 123,940.43 : x
  2. Step 2: Convert to fraction form
    220,755.49/304,621.75 = 123,940.43/x
  3. Step 3: Cross multiply
    220,755.49x = 304,621.75 × 123,940.43
  4. Step 4: Simplify right side
    220,755.49x = 37,754,951,148.01
  5. Step 5: Solve for x
    x = 37,754,951,148.01/220,755.49
  6. Step 6: Final answer
    x = 171,026.11

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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.