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Finding the Fourth Proportional to 328,076.46, 491,939.73 and 169,912.62

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Solution

The fourth proportional to 328,076.46, 491,939.73 and 169,912.62 is: 254,778.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,076.46 : 491,939.73 = 169,912.62 : x
  2. Step 2: Convert to fraction form
    328,076.46/491,939.73 = 169,912.62/x
  3. Step 3: Cross multiply
    328,076.46x = 491,939.73 × 169,912.62
  4. Step 4: Simplify right side
    328,076.46x = 83,586,768,406.39
  5. Step 5: Solve for x
    x = 83,586,768,406.39/328,076.46
  6. Step 6: Final answer
    x = 254,778.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.