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Finding the Fourth Proportional to 404,850.94, 606,869.98 and 138,429.22

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Solution

The fourth proportional to 404,850.94, 606,869.98 and 138,429.22 is: 207,504.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,850.94 : 606,869.98 = 138,429.22 : x
  2. Step 2: Convert to fraction form
    404,850.94/606,869.98 = 138,429.22/x
  3. Step 3: Cross multiply
    404,850.94x = 606,869.98 × 138,429.22
  4. Step 4: Simplify right side
    404,850.94x = 84,008,537,972.82
  5. Step 5: Solve for x
    x = 84,008,537,972.82/404,850.94
  6. Step 6: Final answer
    x = 207,504.86

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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.