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Finding the Fourth Proportional to 404,853.90, 606,616.11 and 138,469.08

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Solution

The fourth proportional to 404,853.90, 606,616.11 and 138,469.08 is: 207,476.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,853.90 : 606,616.11 = 138,469.08 : x
  2. Step 2: Convert to fraction form
    404,853.90/606,616.11 = 138,469.08/x
  3. Step 3: Cross multiply
    404,853.90x = 606,616.11 × 138,469.08
  4. Step 4: Simplify right side
    404,853.90x = 83,997,574,664.88
  5. Step 5: Solve for x
    x = 83,997,574,664.88/404,853.90
  6. Step 6: Final answer
    x = 207,476.26

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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.