Home / 201,181-278,903

Finding the Third Proportional to 201,181 and 278,903

Calculator

Solution

The third proportional to 201,181 and 278,903 is: 386,651.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,181 : 278,903 = 278,903 : x
  2. Step 2: Convert to fraction form
    201,181/278,903 = 278,903/x
  3. Step 3: Cross multiply
    201,181x = 278,903 × 278,903
  4. Step 4: Simplify right side
    201,181x = 77,786,883,409
  5. Step 5: Solve for x
    x = 77,786,883,409/201,181
  6. Step 6: Final answer
    x = 386,651.24

Related Problems

Find third proportional to 100,590.50 and 139,451.50
Half scale
Find third proportional to 402,362 and 557,806
Double scale
Find third proportional to 201,183 and 278,906
Similar ratio
Find third proportional to 301,771.50 and 418,354.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.