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Finding the Fourth Proportional to 259,800.20, 389,627.40 and 82,361.60

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Solution

The fourth proportional to 259,800.20, 389,627.40 and 82,361.60 is: 123,519.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,800.20 : 389,627.40 = 82,361.60 : x
  2. Step 2: Convert to fraction form
    259,800.20/389,627.40 = 82,361.60/x
  3. Step 3: Cross multiply
    259,800.20x = 389,627.40 × 82,361.60
  4. Step 4: Simplify right side
    259,800.20x = 32,090,336,067.84
  5. Step 5: Solve for x
    x = 32,090,336,067.84/259,800.20
  6. Step 6: Final answer
    x = 123,519.29

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1.5x scale

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.