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Finding the Fourth Proportional to 263,392.20, 394,991.10 and 130,228.20

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Solution

The fourth proportional to 263,392.20, 394,991.10 and 130,228.20 is: 195,294.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,392.20 : 394,991.10 = 130,228.20 : x
  2. Step 2: Convert to fraction form
    263,392.20/394,991.10 = 130,228.20/x
  3. Step 3: Cross multiply
    263,392.20x = 394,991.10 × 130,228.20
  4. Step 4: Simplify right side
    263,392.20x = 51,438,979,969.02
  5. Step 5: Solve for x
    x = 51,438,979,969.02/263,392.20
  6. Step 6: Final answer
    x = 195,294.24

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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.