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Finding the Fourth Proportional to 308,087.20, 461,353.20 and 245,879.20

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Solution

The fourth proportional to 308,087.20, 461,353.20 and 245,879.20 is: 368,198.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,087.20 : 461,353.20 = 245,879.20 : x
  2. Step 2: Convert to fraction form
    308,087.20/461,353.20 = 245,879.20/x
  3. Step 3: Cross multiply
    308,087.20x = 461,353.20 × 245,879.20
  4. Step 4: Simplify right side
    308,087.20x = 113,437,155,733.44
  5. Step 5: Solve for x
    x = 113,437,155,733.44/308,087.20
  6. Step 6: Final answer
    x = 368,198.21

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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.