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Finding the Fourth Proportional to 220,028.97, 303,542.29 and 143,530.44

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Solution

The fourth proportional to 220,028.97, 303,542.29 and 143,530.44 is: 198,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,028.97 : 303,542.29 = 143,530.44 : x
  2. Step 2: Convert to fraction form
    220,028.97/303,542.29 = 143,530.44/x
  3. Step 3: Cross multiply
    220,028.97x = 303,542.29 × 143,530.44
  4. Step 4: Simplify right side
    220,028.97x = 43,567,557,724.66
  5. Step 5: Solve for x
    x = 43,567,557,724.66/220,028.97
  6. Step 6: Final answer
    x = 198,008.28

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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.