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Finding the Fourth Proportional to 339,661.82, 509,452.50 and 115,021.82

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Solution

The fourth proportional to 339,661.82, 509,452.50 and 115,021.82 is: 172,519.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,661.82 : 509,452.50 = 115,021.82 : x
  2. Step 2: Convert to fraction form
    339,661.82/509,452.50 = 115,021.82/x
  3. Step 3: Cross multiply
    339,661.82x = 509,452.50 × 115,021.82
  4. Step 4: Simplify right side
    339,661.82x = 58,598,153,753.55
  5. Step 5: Solve for x
    x = 58,598,153,753.55/339,661.82
  6. Step 6: Final answer
    x = 172,519.11

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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.