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Finding the Fourth Proportional to 404,755.94, 607,115.87 and 138,540.26

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Solution

The fourth proportional to 404,755.94, 607,115.87 and 138,540.26 is: 207,804.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,755.94 : 607,115.87 = 138,540.26 : x
  2. Step 2: Convert to fraction form
    404,755.94/607,115.87 = 138,540.26/x
  3. Step 3: Cross multiply
    404,755.94x = 607,115.87 × 138,540.26
  4. Step 4: Simplify right side
    404,755.94x = 84,109,990,479.93
  5. Step 5: Solve for x
    x = 84,109,990,479.93/404,755.94
  6. Step 6: Final answer
    x = 207,804.22

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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.