Home / 220,212-306,411

Finding the Third Proportional to 220,212 and 306,411

Calculator

Solution

The third proportional to 220,212 and 306,411 is: 426,351.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,212 : 306,411 = 306,411 : x
  2. Step 2: Convert to fraction form
    220,212/306,411 = 306,411/x
  3. Step 3: Cross multiply
    220,212x = 306,411 × 306,411
  4. Step 4: Simplify right side
    220,212x = 93,887,700,921
  5. Step 5: Solve for x
    x = 93,887,700,921/220,212
  6. Step 6: Final answer
    x = 426,351.43

Related Problems

Find third proportional to 110,106 and 153,205.50
Half scale
Find third proportional to 440,424 and 612,822
Double scale
Find third proportional to 220,214 and 306,414
Similar ratio
Find third proportional to 330,318 and 459,616.50
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.