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Finding the Fourth Proportional to 263,008.80, 394,513.20 and 216,928.80

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Solution

The fourth proportional to 263,008.80, 394,513.20 and 216,928.80 is: 325,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,008.80 : 394,513.20 = 216,928.80 : x
  2. Step 2: Convert to fraction form
    263,008.80/394,513.20 = 216,928.80/x
  3. Step 3: Cross multiply
    263,008.80x = 394,513.20 × 216,928.80
  4. Step 4: Simplify right side
    263,008.80x = 85,581,275,060.16
  5. Step 5: Solve for x
    x = 85,581,275,060.16/263,008.80
  6. Step 6: Final answer
    x = 325,393.20

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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.