Home / 121,326-200,454

Finding the Third Proportional to 121,326 and 200,454

Calculator

Solution

The third proportional to 121,326 and 200,454 is: 331,188.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,326 : 200,454 = 200,454 : x
  2. Step 2: Convert to fraction form
    121,326/200,454 = 200,454/x
  3. Step 3: Cross multiply
    121,326x = 200,454 × 200,454
  4. Step 4: Simplify right side
    121,326x = 40,181,806,116
  5. Step 5: Solve for x
    x = 40,181,806,116/121,326
  6. Step 6: Final answer
    x = 331,188.75

Related Problems

Find third proportional to 60,663 and 100,227
Half scale
Find third proportional to 242,652 and 400,908
Double scale
Find third proportional to 121,328 and 200,457
Similar ratio
Find third proportional to 181,989 and 300,681
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.