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Finding the Fourth Proportional to 263,311.30, 394,966.95 and 210,823.30

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Solution

The fourth proportional to 263,311.30, 394,966.95 and 210,823.30 is: 316,234.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,311.30 : 394,966.95 = 210,823.30 : x
  2. Step 2: Convert to fraction form
    263,311.30/394,966.95 = 210,823.30/x
  3. Step 3: Cross multiply
    263,311.30x = 394,966.95 × 210,823.30
  4. Step 4: Simplify right side
    263,311.30x = 83,268,235,789.94
  5. Step 5: Solve for x
    x = 83,268,235,789.94/263,311.30
  6. Step 6: Final answer
    x = 316,234.95

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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.