Home / 121,642-261,396

Finding the Third Proportional to 121,642 and 261,396

Calculator

Solution

The third proportional to 121,642 and 261,396 is: 561,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,642 : 261,396 = 261,396 : x
  2. Step 2: Convert to fraction form
    121,642/261,396 = 261,396/x
  3. Step 3: Cross multiply
    121,642x = 261,396 × 261,396
  4. Step 4: Simplify right side
    121,642x = 68,327,868,816
  5. Step 5: Solve for x
    x = 68,327,868,816/121,642
  6. Step 6: Final answer
    x = 561,712.80

Related Problems

Find third proportional to 60,821 and 130,698
Half scale
Find third proportional to 243,284 and 522,792
Double scale
Find third proportional to 121,644 and 261,400
Similar ratio
Find third proportional to 182,463 and 392,094
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.