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Finding the Fourth Proportional to 339,764.78, 509,650.28 and 103,107.49

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Solution

The fourth proportional to 339,764.78, 509,650.28 and 103,107.49 is: 154,662.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,764.78 : 509,650.28 = 103,107.49 : x
  2. Step 2: Convert to fraction form
    339,764.78/509,650.28 = 103,107.49/x
  3. Step 3: Cross multiply
    339,764.78x = 509,650.28 × 103,107.49
  4. Step 4: Simplify right side
    339,764.78x = 52,548,759,745.59
  5. Step 5: Solve for x
    x = 52,548,759,745.59/339,764.78
  6. Step 6: Final answer
    x = 154,662.17

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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.