Home / 139,766-221,421

Finding the Third Proportional to 139,766 and 221,421

Calculator

Solution

The third proportional to 139,766 and 221,421 is: 350,781.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,766 : 221,421 = 221,421 : x
  2. Step 2: Convert to fraction form
    139,766/221,421 = 221,421/x
  3. Step 3: Cross multiply
    139,766x = 221,421 × 221,421
  4. Step 4: Simplify right side
    139,766x = 49,027,259,241
  5. Step 5: Solve for x
    x = 49,027,259,241/139,766
  6. Step 6: Final answer
    x = 350,781.01

Related Problems

Find third proportional to 69,883 and 110,710.50
Half scale
Find third proportional to 279,532 and 442,842
Double scale
Find third proportional to 139,768 and 221,424
Similar ratio
Find third proportional to 209,649 and 332,131.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.