Home / 200,280-311,916

Finding the Third Proportional to 200,280 and 311,916

Calculator

Solution

The third proportional to 200,280 and 311,916 is: 485,777.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,280 : 311,916 = 311,916 : x
  2. Step 2: Convert to fraction form
    200,280/311,916 = 311,916/x
  3. Step 3: Cross multiply
    200,280x = 311,916 × 311,916
  4. Step 4: Simplify right side
    200,280x = 97,291,591,056
  5. Step 5: Solve for x
    x = 97,291,591,056/200,280
  6. Step 6: Final answer
    x = 485,777.87

Related Problems

Find third proportional to 100,140 and 155,958
Half scale
Find third proportional to 400,560 and 623,832
Double scale
Find third proportional to 200,282 and 311,919
Similar ratio
Find third proportional to 300,420 and 467,874
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.