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Finding the Fourth Proportional to 220,081.82, 303,714.17 and 129,441.60

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Solution

The fourth proportional to 220,081.82, 303,714.17 and 129,441.60 is: 178,630.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,081.82 : 303,714.17 = 129,441.60 : x
  2. Step 2: Convert to fraction form
    220,081.82/303,714.17 = 129,441.60/x
  3. Step 3: Cross multiply
    220,081.82x = 303,714.17 × 129,441.60
  4. Step 4: Simplify right side
    220,081.82x = 39,313,247,460.26
  5. Step 5: Solve for x
    x = 39,313,247,460.26/220,081.82
  6. Step 6: Final answer
    x = 178,630.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.