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Finding the Fourth Proportional to 339,601, 468,664.78 and 188,698

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Solution

The fourth proportional to 339,601, 468,664.78 and 188,698 is: 260,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,601 : 468,664.78 = 188,698 : x
  2. Step 2: Convert to fraction form
    339,601/468,664.78 = 188,698/x
  3. Step 3: Cross multiply
    339,601x = 468,664.78 × 188,698
  4. Step 4: Simplify right side
    339,601x = 88,436,106,656.44
  5. Step 5: Solve for x
    x = 88,436,106,656.44/339,601
  6. Step 6: Final answer
    x = 260,411.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.