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Finding the Fourth Proportional to 275,916.53, 380,868.87 and 161,232.45

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Solution

The fourth proportional to 275,916.53, 380,868.87 and 161,232.45 is: 222,561.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,916.53 : 380,868.87 = 161,232.45 : x
  2. Step 2: Convert to fraction form
    275,916.53/380,868.87 = 161,232.45/x
  3. Step 3: Cross multiply
    275,916.53x = 380,868.87 × 161,232.45
  4. Step 4: Simplify right side
    275,916.53x = 61,408,422,164.78
  5. Step 5: Solve for x
    x = 61,408,422,164.78/275,916.53
  6. Step 6: Final answer
    x = 222,561.59

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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.