Home / 100,981-221,545

Finding the Third Proportional to 100,981 and 221,545

Calculator

Solution

The third proportional to 100,981 and 221,545 is: 486,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,981 : 221,545 = 221,545 : x
  2. Step 2: Convert to fraction form
    100,981/221,545 = 221,545/x
  3. Step 3: Cross multiply
    100,981x = 221,545 × 221,545
  4. Step 4: Simplify right side
    100,981x = 49,082,187,025
  5. Step 5: Solve for x
    x = 49,082,187,025/100,981
  6. Step 6: Final answer
    x = 486,053.68

Related Problems

Find third proportional to 50,490.50 and 110,772.50
Half scale
Find third proportional to 201,962 and 443,090
Double scale
Find third proportional to 100,983 and 221,549
Similar ratio
Find third proportional to 151,471.50 and 332,317.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.