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Finding the Fourth Proportional to 239,906, 331,099.44 and 139,304

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Solution

The fourth proportional to 239,906, 331,099.44 and 139,304 is: 192,256.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,906 : 331,099.44 = 139,304 : x
  2. Step 2: Convert to fraction form
    239,906/331,099.44 = 139,304/x
  3. Step 3: Cross multiply
    239,906x = 331,099.44 × 139,304
  4. Step 4: Simplify right side
    239,906x = 46,123,476,389.76
  5. Step 5: Solve for x
    x = 46,123,476,389.76/239,906
  6. Step 6: Final answer
    x = 192,256.45

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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.