Home / 221,947-485,415

Finding the Third Proportional to 221,947 and 485,415

Calculator

Solution

The third proportional to 221,947 and 485,415 is: 1,061,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,947 : 485,415 = 485,415 : x
  2. Step 2: Convert to fraction form
    221,947/485,415 = 485,415/x
  3. Step 3: Cross multiply
    221,947x = 485,415 × 485,415
  4. Step 4: Simplify right side
    221,947x = 235,627,722,225
  5. Step 5: Solve for x
    x = 235,627,722,225/221,947
  6. Step 6: Final answer
    x = 1,061,639.59

Related Problems

Find third proportional to 110,973.50 and 242,707.50
Half scale
Find third proportional to 443,894 and 970,830
Double scale
Find third proportional to 221,949 and 485,419
Similar ratio
Find third proportional to 332,920.50 and 728,122.50
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.