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Finding the Fourth Proportional to 315,198.39, 434,958.62 and 171,949.89

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Solution

The fourth proportional to 315,198.39, 434,958.62 and 171,949.89 is: 237,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,198.39 : 434,958.62 = 171,949.89 : x
  2. Step 2: Convert to fraction form
    315,198.39/434,958.62 = 171,949.89/x
  3. Step 3: Cross multiply
    315,198.39x = 434,958.62 × 171,949.89
  4. Step 4: Simplify right side
    315,198.39x = 74,791,086,003.80
  5. Step 5: Solve for x
    x = 74,791,086,003.80/315,198.39
  6. Step 6: Final answer
    x = 237,282.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.