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Finding the Fourth Proportional to 203,820.20, 305,730.30 and 63,578.60

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Solution

The fourth proportional to 203,820.20, 305,730.30 and 63,578.60 is: 95,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,820.20 : 305,730.30 = 63,578.60 : x
  2. Step 2: Convert to fraction form
    203,820.20/305,730.30 = 63,578.60/x
  3. Step 3: Cross multiply
    203,820.20x = 305,730.30 × 63,578.60
  4. Step 4: Simplify right side
    203,820.20x = 19,437,904,451.58
  5. Step 5: Solve for x
    x = 19,437,904,451.58/203,820.20
  6. Step 6: Final answer
    x = 95,367.90

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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.