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Finding the Fourth Proportional to 404,850.44, 606,869.24 and 138,428.73

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Solution

The fourth proportional to 404,850.44, 606,869.24 and 138,428.73 is: 207,504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,850.44 : 606,869.24 = 138,428.73 : x
  2. Step 2: Convert to fraction form
    404,850.44/606,869.24 = 138,428.73/x
  3. Step 3: Cross multiply
    404,850.44x = 606,869.24 × 138,428.73
  4. Step 4: Simplify right side
    404,850.44x = 84,008,137,477.12
  5. Step 5: Solve for x
    x = 84,008,137,477.12/404,850.44
  6. Step 6: Final answer
    x = 207,504.13

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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.