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Finding the Fourth Proportional to 239,895, 331,084.32 and 139,293

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Solution

The fourth proportional to 239,895, 331,084.32 and 139,293 is: 192,241.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,895 : 331,084.32 = 139,293 : x
  2. Step 2: Convert to fraction form
    239,895/331,084.32 = 139,293/x
  3. Step 3: Cross multiply
    239,895x = 331,084.32 × 139,293
  4. Step 4: Simplify right side
    239,895x = 46,117,728,185.76
  5. Step 5: Solve for x
    x = 46,117,728,185.76/239,895
  6. Step 6: Final answer
    x = 192,241.31

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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.