Home / 215,790-440,144

Finding the Third Proportional to 215,790 and 440,144

Calculator

Solution

The third proportional to 215,790 and 440,144 is: 897,755.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,790 : 440,144 = 440,144 : x
  2. Step 2: Convert to fraction form
    215,790/440,144 = 440,144/x
  3. Step 3: Cross multiply
    215,790x = 440,144 × 440,144
  4. Step 4: Simplify right side
    215,790x = 193,726,740,736
  5. Step 5: Solve for x
    x = 193,726,740,736/215,790
  6. Step 6: Final answer
    x = 897,755.88

Related Problems

Find third proportional to 107,895 and 220,072
Half scale
Find third proportional to 431,580 and 880,288
Double scale
Find third proportional to 215,792 and 440,148
Similar ratio
Find third proportional to 323,685 and 660,216
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.