Home / 275,220-421,037

Finding the Third Proportional to 275,220 and 421,037

Calculator

Solution

The third proportional to 275,220 and 421,037 is: 644,110.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,220 : 421,037 = 421,037 : x
  2. Step 2: Convert to fraction form
    275,220/421,037 = 421,037/x
  3. Step 3: Cross multiply
    275,220x = 421,037 × 421,037
  4. Step 4: Simplify right side
    275,220x = 177,272,155,369
  5. Step 5: Solve for x
    x = 177,272,155,369/275,220
  6. Step 6: Final answer
    x = 644,110.73

Related Problems

Find third proportional to 137,610 and 210,518.50
Half scale
Find third proportional to 550,440 and 842,074
Double scale
Find third proportional to 275,222 and 421,040
Similar ratio
Find third proportional to 412,830 and 631,555.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.