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Finding the Fourth Proportional to 404,604.10, 606,906.15 and 138,324.70

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Solution

The fourth proportional to 404,604.10, 606,906.15 and 138,324.70 is: 207,487.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,604.10 : 606,906.15 = 138,324.70 : x
  2. Step 2: Convert to fraction form
    404,604.10/606,906.15 = 138,324.70/x
  3. Step 3: Cross multiply
    404,604.10x = 606,906.15 × 138,324.70
  4. Step 4: Simplify right side
    404,604.10x = 83,950,111,126.91
  5. Step 5: Solve for x
    x = 83,950,111,126.91/404,604.10
  6. Step 6: Final answer
    x = 207,487.05

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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.