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Finding the Fourth Proportional to 263,181.40, 394,512.90 and 130,082.20

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Solution

The fourth proportional to 263,181.40, 394,512.90 and 130,082.20 is: 194,995.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,181.40 : 394,512.90 = 130,082.20 : x
  2. Step 2: Convert to fraction form
    263,181.40/394,512.90 = 130,082.20/x
  3. Step 3: Cross multiply
    263,181.40x = 394,512.90 × 130,082.20
  4. Step 4: Simplify right side
    263,181.40x = 51,319,105,960.38
  5. Step 5: Solve for x
    x = 51,319,105,960.38/263,181.40
  6. Step 6: Final answer
    x = 194,995.19

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1.5x scale

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.