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Finding the Fourth Proportional to 259,618.60, 388,563.90 and 188,338.60

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Solution

The fourth proportional to 259,618.60, 388,563.90 and 188,338.60 is: 281,881.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,618.60 : 388,563.90 = 188,338.60 : x
  2. Step 2: Convert to fraction form
    259,618.60/388,563.90 = 188,338.60/x
  3. Step 3: Cross multiply
    259,618.60x = 388,563.90 × 188,338.60
  4. Step 4: Simplify right side
    259,618.60x = 73,181,580,936.54
  5. Step 5: Solve for x
    x = 73,181,580,936.54/259,618.60
  6. Step 6: Final answer
    x = 281,881.12

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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.