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Finding the Fourth Proportional to 220,660, 304,517.28 and 120,064.48

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Solution

The fourth proportional to 220,660, 304,517.28 and 120,064.48 is: 165,692.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,660 : 304,517.28 = 120,064.48 : x
  2. Step 2: Convert to fraction form
    220,660/304,517.28 = 120,064.48/x
  3. Step 3: Cross multiply
    220,660x = 304,517.28 × 120,064.48
  4. Step 4: Simplify right side
    220,660x = 36,561,708,874.21
  5. Step 5: Solve for x
    x = 36,561,708,874.21/220,660
  6. Step 6: Final answer
    x = 165,692.51

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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.