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Finding the Fourth Proportional to 339,379.43, 509,179.88 and 161,863.37

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Solution

The fourth proportional to 339,379.43, 509,179.88 and 161,863.37 is: 242,847.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,379.43 : 509,179.88 = 161,863.37 : x
  2. Step 2: Convert to fraction form
    339,379.43/509,179.88 = 161,863.37/x
  3. Step 3: Cross multiply
    339,379.43x = 509,179.88 × 161,863.37
  4. Step 4: Simplify right side
    339,379.43x = 82,417,571,313.00
  5. Step 5: Solve for x
    x = 82,417,571,313.00/339,379.43
  6. Step 6: Final answer
    x = 242,847.87

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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.