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Finding the Fourth Proportional to 311,072.40, 465,917.40 and 269,600.40

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Solution

The fourth proportional to 311,072.40, 465,917.40 and 269,600.40 is: 403,801.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,072.40 : 465,917.40 = 269,600.40 : x
  2. Step 2: Convert to fraction form
    311,072.40/465,917.40 = 269,600.40/x
  3. Step 3: Cross multiply
    311,072.40x = 465,917.40 × 269,600.40
  4. Step 4: Simplify right side
    311,072.40x = 125,611,517,406.96
  5. Step 5: Solve for x
    x = 125,611,517,406.96/311,072.40
  6. Step 6: Final answer
    x = 403,801.55

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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.