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Finding the Fourth Proportional to 325,860.90, 488,791.35 and 220,107.30

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Solution

The fourth proportional to 325,860.90, 488,791.35 and 220,107.30 is: 330,160.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,860.90 : 488,791.35 = 220,107.30 : x
  2. Step 2: Convert to fraction form
    325,860.90/488,791.35 = 220,107.30/x
  3. Step 3: Cross multiply
    325,860.90x = 488,791.35 × 220,107.30
  4. Step 4: Simplify right side
    325,860.90x = 107,586,544,311.86
  5. Step 5: Solve for x
    x = 107,586,544,311.86/325,860.90
  6. Step 6: Final answer
    x = 330,160.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.