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Finding the Fourth Proportional to 238,728, 329,447.34 and 131,299.80

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Solution

The fourth proportional to 238,728, 329,447.34 and 131,299.80 is: 181,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,728 : 329,447.34 = 131,299.80 : x
  2. Step 2: Convert to fraction form
    238,728/329,447.34 = 131,299.80/x
  3. Step 3: Cross multiply
    238,728x = 329,447.34 × 131,299.80
  4. Step 4: Simplify right side
    238,728x = 43,256,369,852.53
  5. Step 5: Solve for x
    x = 43,256,369,852.53/238,728
  6. Step 6: Final answer
    x = 181,195.21

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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.