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Finding the Fourth Proportional to 303,129.36, 418,343.43 and 167,189.90

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Solution

The fourth proportional to 303,129.36, 418,343.43 and 167,189.90 is: 230,735.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,129.36 : 418,343.43 = 167,189.90 : x
  2. Step 2: Convert to fraction form
    303,129.36/418,343.43 = 167,189.90/x
  3. Step 3: Cross multiply
    303,129.36x = 418,343.43 × 167,189.90
  4. Step 4: Simplify right side
    303,129.36x = 69,942,794,135.64
  5. Step 5: Solve for x
    x = 69,942,794,135.64/303,129.36
  6. Step 6: Final answer
    x = 230,735.80

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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.