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Finding the Fourth Proportional to 338,745.22, 508,118.01 and 86,044.66

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Solution

The fourth proportional to 338,745.22, 508,118.01 and 86,044.66 is: 129,067.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,745.22 : 508,118.01 = 86,044.66 : x
  2. Step 2: Convert to fraction form
    338,745.22/508,118.01 = 86,044.66/x
  3. Step 3: Cross multiply
    338,745.22x = 508,118.01 × 86,044.66
  4. Step 4: Simplify right side
    338,745.22x = 43,720,841,410.33
  5. Step 5: Solve for x
    x = 43,720,841,410.33/338,745.22
  6. Step 6: Final answer
    x = 129,067.04

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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.