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Finding the Fourth Proportional to 339,969.81, 510,016.68 and 140,179.26

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Solution

The fourth proportional to 339,969.81, 510,016.68 and 140,179.26 is: 210,294.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,969.81 : 510,016.68 = 140,179.26 : x
  2. Step 2: Convert to fraction form
    339,969.81/510,016.68 = 140,179.26/x
  3. Step 3: Cross multiply
    339,969.81x = 510,016.68 × 140,179.26
  4. Step 4: Simplify right side
    339,969.81x = 71,493,760,790.06
  5. Step 5: Solve for x
    x = 71,493,760,790.06/339,969.81
  6. Step 6: Final answer
    x = 210,294.44

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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.