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Finding the Fourth Proportional to 339,859.50, 509,789.24 and 161,826.78

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Solution

The fourth proportional to 339,859.50, 509,789.24 and 161,826.78 is: 242,740.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,859.50 : 509,789.24 = 161,826.78 : x
  2. Step 2: Convert to fraction form
    339,859.50/509,789.24 = 161,826.78/x
  3. Step 3: Cross multiply
    339,859.50x = 509,789.24 × 161,826.78
  4. Step 4: Simplify right side
    339,859.50x = 82,497,551,187.85
  5. Step 5: Solve for x
    x = 82,497,551,187.85/339,859.50
  6. Step 6: Final answer
    x = 242,740.17

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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.