Home / 338,938.26-508,405.19-86,216.58

Finding the Fourth Proportional to 338,938.26, 508,405.19 and 86,216.58

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Solution

The fourth proportional to 338,938.26, 508,405.19 and 86,216.58 is: 129,324.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,938.26 : 508,405.19 = 86,216.58 : x
  2. Step 2: Convert to fraction form
    338,938.26/508,405.19 = 86,216.58/x
  3. Step 3: Cross multiply
    338,938.26x = 508,405.19 × 86,216.58
  4. Step 4: Simplify right side
    338,938.26x = 43,832,956,304.97
  5. Step 5: Solve for x
    x = 43,832,956,304.97/338,938.26
  6. Step 6: Final answer
    x = 129,324.31

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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.