Home / 199,987-281,268

Finding the Third Proportional to 199,987 and 281,268

Calculator

Solution

The third proportional to 199,987 and 281,268 is: 395,584.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,987 : 281,268 = 281,268 : x
  2. Step 2: Convert to fraction form
    199,987/281,268 = 281,268/x
  3. Step 3: Cross multiply
    199,987x = 281,268 × 281,268
  4. Step 4: Simplify right side
    199,987x = 79,111,687,824
  5. Step 5: Solve for x
    x = 79,111,687,824/199,987
  6. Step 6: Final answer
    x = 395,584.15

Related Problems

Find third proportional to 99,993.50 and 140,634
Half scale
Find third proportional to 399,974 and 562,536
Double scale
Find third proportional to 199,989 and 281,271
Similar ratio
Find third proportional to 299,980.50 and 421,902
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.