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Finding the Fourth Proportional to 339,933.49, 509,958.32 and 140,144.66

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Solution

The fourth proportional to 339,933.49, 509,958.32 and 140,144.66 is: 210,240.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,933.49 : 509,958.32 = 140,144.66 : x
  2. Step 2: Convert to fraction form
    339,933.49/509,958.32 = 140,144.66/x
  3. Step 3: Cross multiply
    339,933.49x = 509,958.32 × 140,144.66
  4. Step 4: Simplify right side
    339,933.49x = 71,467,935,083.49
  5. Step 5: Solve for x
    x = 71,467,935,083.49/339,933.49
  6. Step 6: Final answer
    x = 210,240.94

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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.