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Finding the Fourth Proportional to 259,620.60, 388,566.90 and 188,340.60

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Solution

The fourth proportional to 259,620.60, 388,566.90 and 188,340.60 is: 281,884.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,620.60 : 388,566.90 = 188,340.60 : x
  2. Step 2: Convert to fraction form
    259,620.60/388,566.90 = 188,340.60/x
  3. Step 3: Cross multiply
    259,620.60x = 388,566.90 × 188,340.60
  4. Step 4: Simplify right side
    259,620.60x = 73,182,923,086.14
  5. Step 5: Solve for x
    x = 73,182,923,086.14/259,620.60
  6. Step 6: Final answer
    x = 281,884.12

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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.