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Finding the Fourth Proportional to 339,757.90, 509,639.91 and 103,100.57

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Solution

The fourth proportional to 339,757.90, 509,639.91 and 103,100.57 is: 154,651.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,757.90 : 509,639.91 = 103,100.57 : x
  2. Step 2: Convert to fraction form
    339,757.90/509,639.91 = 103,100.57/x
  3. Step 3: Cross multiply
    339,757.90x = 509,639.91 × 103,100.57
  4. Step 4: Simplify right side
    339,757.90x = 52,544,165,215.75
  5. Step 5: Solve for x
    x = 52,544,165,215.75/339,757.90
  6. Step 6: Final answer
    x = 154,651.78

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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.