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Finding the Fourth Proportional to 239,866, 331,044.24 and 139,264

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Solution

The fourth proportional to 239,866, 331,044.24 and 139,264 is: 192,201.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,866 : 331,044.24 = 139,264 : x
  2. Step 2: Convert to fraction form
    239,866/331,044.24 = 139,264/x
  3. Step 3: Cross multiply
    239,866x = 331,044.24 × 139,264
  4. Step 4: Simplify right side
    239,866x = 46,102,545,039.36
  5. Step 5: Solve for x
    x = 46,102,545,039.36/239,866
  6. Step 6: Final answer
    x = 192,201.25

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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.