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Finding the Fourth Proportional to 220,833.90, 304,750.85 and 120,231.90

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Solution

The fourth proportional to 220,833.90, 304,750.85 and 120,231.90 is: 165,920.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,833.90 : 304,750.85 = 120,231.90 : x
  2. Step 2: Convert to fraction form
    220,833.90/304,750.85 = 120,231.90/x
  3. Step 3: Cross multiply
    220,833.90x = 304,750.85 × 120,231.90
  4. Step 4: Simplify right side
    220,833.90x = 36,640,773,120.96
  5. Step 5: Solve for x
    x = 36,640,773,120.96/220,833.90
  6. Step 6: Final answer
    x = 165,920.06

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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.