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Finding the Fourth Proportional to 538,153.80, 806,939.10 and 222,642.60

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Solution

The fourth proportional to 538,153.80, 806,939.10 and 222,642.60 is: 333,843.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,153.80 : 806,939.10 = 222,642.60 : x
  2. Step 2: Convert to fraction form
    538,153.80/806,939.10 = 222,642.60/x
  3. Step 3: Cross multiply
    538,153.80x = 806,939.10 × 222,642.60
  4. Step 4: Simplify right side
    538,153.80x = 179,659,019,265.66
  5. Step 5: Solve for x
    x = 179,659,019,265.66/538,153.80
  6. Step 6: Final answer
    x = 333,843.26

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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.