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Finding the Fourth Proportional to 251,954.78, 347,705.56 and 137,236.87

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Solution

The fourth proportional to 251,954.78, 347,705.56 and 137,236.87 is: 189,391.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,954.78 : 347,705.56 = 137,236.87 : x
  2. Step 2: Convert to fraction form
    251,954.78/347,705.56 = 137,236.87/x
  3. Step 3: Cross multiply
    251,954.78x = 347,705.56 × 137,236.87
  4. Step 4: Simplify right side
    251,954.78x = 47,718,021,523.64
  5. Step 5: Solve for x
    x = 47,718,021,523.64/251,954.78
  6. Step 6: Final answer
    x = 189,391.22

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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.