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Finding the Fourth Proportional to 295,080.20, 442,620.30 and 81,847.70

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Solution

The fourth proportional to 295,080.20, 442,620.30 and 81,847.70 is: 122,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,080.20 : 442,620.30 = 81,847.70 : x
  2. Step 2: Convert to fraction form
    295,080.20/442,620.30 = 81,847.70/x
  3. Step 3: Cross multiply
    295,080.20x = 442,620.30 × 81,847.70
  4. Step 4: Simplify right side
    295,080.20x = 36,227,453,528.31
  5. Step 5: Solve for x
    x = 36,227,453,528.31/295,080.20
  6. Step 6: Final answer
    x = 122,771.55

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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.