Home / 263,012.10-394,518.15-129,912.90

Finding the Fourth Proportional to 263,012.10, 394,518.15 and 129,912.90

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Solution

The fourth proportional to 263,012.10, 394,518.15 and 129,912.90 is: 194,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,012.10 : 394,518.15 = 129,912.90 : x
  2. Step 2: Convert to fraction form
    263,012.10/394,518.15 = 129,912.90/x
  3. Step 3: Cross multiply
    263,012.10x = 394,518.15 × 129,912.90
  4. Step 4: Simplify right side
    263,012.10x = 51,252,996,969.14
  5. Step 5: Solve for x
    x = 51,252,996,969.14/263,012.10
  6. Step 6: Final answer
    x = 194,869.35

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Similar ratio
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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.