Home / 220,082.31-303,714.86-129,442.09

Finding the Fourth Proportional to 220,082.31, 303,714.86 and 129,442.09

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Solution

The fourth proportional to 220,082.31, 303,714.86 and 129,442.09 is: 178,630.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,082.31 : 303,714.86 = 129,442.09 : x
  2. Step 2: Convert to fraction form
    220,082.31/303,714.86 = 129,442.09/x
  3. Step 3: Cross multiply
    220,082.31x = 303,714.86 × 129,442.09
  4. Step 4: Simplify right side
    220,082.31x = 39,313,486,242.46
  5. Step 5: Solve for x
    x = 39,313,486,242.46/220,082.31
  6. Step 6: Final answer
    x = 178,630.83

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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.