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Finding the Fourth Proportional to 339,375.80, 509,174.42 and 161,859.74

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Solution

The fourth proportional to 339,375.80, 509,174.42 and 161,859.74 is: 242,842.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,375.80 : 509,174.42 = 161,859.74 : x
  2. Step 2: Convert to fraction form
    339,375.80/509,174.42 = 161,859.74/x
  3. Step 3: Cross multiply
    339,375.80x = 509,174.42 × 161,859.74
  4. Step 4: Simplify right side
    339,375.80x = 82,414,839,235.85
  5. Step 5: Solve for x
    x = 82,414,839,235.85/339,375.80
  6. Step 6: Final answer
    x = 242,842.42

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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.