Home / 130,619-201,821

Finding the Third Proportional to 130,619 and 201,821

Calculator

Solution

The third proportional to 130,619 and 201,821 is: 311,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,619 : 201,821 = 201,821 : x
  2. Step 2: Convert to fraction form
    130,619/201,821 = 201,821/x
  3. Step 3: Cross multiply
    130,619x = 201,821 × 201,821
  4. Step 4: Simplify right side
    130,619x = 40,731,716,041
  5. Step 5: Solve for x
    x = 40,731,716,041/130,619
  6. Step 6: Final answer
    x = 311,836.07

Related Problems

Find third proportional to 65,309.50 and 100,910.50
Half scale
Find third proportional to 261,238 and 403,642
Double scale
Find third proportional to 130,621 and 201,824
Similar ratio
Find third proportional to 195,928.50 and 302,731.50
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.