Home / 200,908-311,285

Finding the Third Proportional to 200,908 and 311,285

Calculator

Solution

The third proportional to 200,908 and 311,285 is: 482,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,908 : 311,285 = 311,285 : x
  2. Step 2: Convert to fraction form
    200,908/311,285 = 311,285/x
  3. Step 3: Cross multiply
    200,908x = 311,285 × 311,285
  4. Step 4: Simplify right side
    200,908x = 96,898,351,225
  5. Step 5: Solve for x
    x = 96,898,351,225/200,908
  6. Step 6: Final answer
    x = 482,302.10

Related Problems

Find third proportional to 100,454 and 155,642.50
Half scale
Find third proportional to 401,816 and 622,570
Double scale
Find third proportional to 200,910 and 311,288
Similar ratio
Find third proportional to 301,362 and 466,927.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.