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Finding the Fourth Proportional to 308,003.67, 425,040.60 and 172,039.56

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Solution

The fourth proportional to 308,003.67, 425,040.60 and 172,039.56 is: 237,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,003.67 : 425,040.60 = 172,039.56 : x
  2. Step 2: Convert to fraction form
    308,003.67/425,040.60 = 172,039.56/x
  3. Step 3: Cross multiply
    308,003.67x = 425,040.60 × 172,039.56
  4. Step 4: Simplify right side
    308,003.67x = 73,123,797,806.14
  5. Step 5: Solve for x
    x = 73,123,797,806.14/308,003.67
  6. Step 6: Final answer
    x = 237,412.10

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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.