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Finding the Fourth Proportional to 220,906.60, 304,855.14 and 120,306.28

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Solution

The fourth proportional to 220,906.60, 304,855.14 and 120,306.28 is: 166,024.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,906.60 : 304,855.14 = 120,306.28 : x
  2. Step 2: Convert to fraction form
    220,906.60/304,855.14 = 120,306.28/x
  3. Step 3: Cross multiply
    220,906.60x = 304,855.14 × 120,306.28
  4. Step 4: Simplify right side
    220,906.60x = 36,675,987,832.28
  5. Step 5: Solve for x
    x = 36,675,987,832.28/220,906.60
  6. Step 6: Final answer
    x = 166,024.86

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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.