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Finding the Fourth Proportional to 220,779, 304,675.06 and 120,177

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Solution

The fourth proportional to 220,779, 304,675.06 and 120,177 is: 165,844.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,779 : 304,675.06 = 120,177 : x
  2. Step 2: Convert to fraction form
    220,779/304,675.06 = 120,177/x
  3. Step 3: Cross multiply
    220,779x = 304,675.06 × 120,177
  4. Step 4: Simplify right side
    220,779x = 36,614,934,685.62
  5. Step 5: Solve for x
    x = 36,614,934,685.62/220,779
  6. Step 6: Final answer
    x = 165,844.28

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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.