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Finding the Fourth Proportional to 339,871.80, 509,849.24 and 115,296.48

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Solution

The fourth proportional to 339,871.80, 509,849.24 and 115,296.48 is: 172,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,871.80 : 509,849.24 = 115,296.48 : x
  2. Step 2: Convert to fraction form
    339,871.80/509,849.24 = 115,296.48/x
  3. Step 3: Cross multiply
    339,871.80x = 509,849.24 × 115,296.48
  4. Step 4: Simplify right side
    339,871.80x = 58,783,819,975.27
  5. Step 5: Solve for x
    x = 58,783,819,975.27/339,871.80
  6. Step 6: Final answer
    x = 172,958.80

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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.