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Finding the Fourth Proportional to 275,867.99, 380,685.68 and 161,157.25

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Solution

The fourth proportional to 275,867.99, 380,685.68 and 161,157.25 is: 222,389.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,867.99 : 380,685.68 = 161,157.25 : x
  2. Step 2: Convert to fraction form
    275,867.99/380,685.68 = 161,157.25/x
  3. Step 3: Cross multiply
    275,867.99x = 380,685.68 × 161,157.25
  4. Step 4: Simplify right side
    275,867.99x = 61,350,257,449.11
  5. Step 5: Solve for x
    x = 61,350,257,449.11/275,867.99
  6. Step 6: Final answer
    x = 222,389.91

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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.