Home / 220,646.40-331,176.96-115,540.80

Finding the Fourth Proportional to 220,646.40, 331,176.96 and 115,540.80

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Solution

The fourth proportional to 220,646.40, 331,176.96 and 115,540.80 is: 173,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,646.40 : 331,176.96 = 115,540.80 : x
  2. Step 2: Convert to fraction form
    220,646.40/331,176.96 = 115,540.80/x
  3. Step 3: Cross multiply
    220,646.40x = 331,176.96 × 115,540.80
  4. Step 4: Simplify right side
    220,646.40x = 38,264,450,899.97
  5. Step 5: Solve for x
    x = 38,264,450,899.97/220,646.40
  6. Step 6: Final answer
    x = 173,419.78

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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.