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Finding the Fourth Proportional to 220,956.04, 304,917.78 and 120,354.04

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Solution

The fourth proportional to 220,956.04, 304,917.78 and 120,354.04 is: 166,087.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,956.04 : 304,917.78 = 120,354.04 : x
  2. Step 2: Convert to fraction form
    220,956.04/304,917.78 = 120,354.04/x
  3. Step 3: Cross multiply
    220,956.04x = 304,917.78 × 120,354.04
  4. Step 4: Simplify right side
    220,956.04x = 36,698,086,690.83
  5. Step 5: Solve for x
    x = 36,698,086,690.83/220,956.04
  6. Step 6: Final answer
    x = 166,087.73

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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.