Home / 338,940.26-508,408.18-86,218.58

Finding the Fourth Proportional to 338,940.26, 508,408.18 and 86,218.58

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Solution

The fourth proportional to 338,940.26, 508,408.18 and 86,218.58 is: 129,327.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,940.26 : 508,408.18 = 86,218.58 : x
  2. Step 2: Convert to fraction form
    338,940.26/508,408.18 = 86,218.58/x
  3. Step 3: Cross multiply
    338,940.26x = 508,408.18 × 86,218.58
  4. Step 4: Simplify right side
    338,940.26x = 43,834,231,339.98
  5. Step 5: Solve for x
    x = 43,834,231,339.98/338,940.26
  6. Step 6: Final answer
    x = 129,327.31

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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.