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Finding the Fourth Proportional to 262,863.80, 394,295.70 and 220,873.40

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Solution

The fourth proportional to 262,863.80, 394,295.70 and 220,873.40 is: 331,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,863.80 : 394,295.70 = 220,873.40 : x
  2. Step 2: Convert to fraction form
    262,863.80/394,295.70 = 220,873.40/x
  3. Step 3: Cross multiply
    262,863.80x = 394,295.70 × 220,873.40
  4. Step 4: Simplify right side
    262,863.80x = 87,089,431,864.38
  5. Step 5: Solve for x
    x = 87,089,431,864.38/262,863.80
  6. Step 6: Final answer
    x = 331,310.10

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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.