Home / 140,210-211,987

Finding the Third Proportional to 140,210 and 211,987

Calculator

Solution

The third proportional to 140,210 and 211,987 is: 320,508.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,210 : 211,987 = 211,987 : x
  2. Step 2: Convert to fraction form
    140,210/211,987 = 211,987/x
  3. Step 3: Cross multiply
    140,210x = 211,987 × 211,987
  4. Step 4: Simplify right side
    140,210x = 44,938,488,169
  5. Step 5: Solve for x
    x = 44,938,488,169/140,210
  6. Step 6: Final answer
    x = 320,508.44

Related Problems

Find third proportional to 70,105 and 105,993.50
Half scale
Find third proportional to 280,420 and 423,974
Double scale
Find third proportional to 140,212 and 211,990
Similar ratio
Find third proportional to 210,315 and 317,980.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.