Home / 121,310-259,245

Finding the Third Proportional to 121,310 and 259,245

Calculator

Solution

The third proportional to 121,310 and 259,245 is: 554,018.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,310 : 259,245 = 259,245 : x
  2. Step 2: Convert to fraction form
    121,310/259,245 = 259,245/x
  3. Step 3: Cross multiply
    121,310x = 259,245 × 259,245
  4. Step 4: Simplify right side
    121,310x = 67,207,970,025
  5. Step 5: Solve for x
    x = 67,207,970,025/121,310
  6. Step 6: Final answer
    x = 554,018.38

Related Problems

Find third proportional to 60,655 and 129,622.50
Half scale
Find third proportional to 242,620 and 518,490
Double scale
Find third proportional to 121,312 and 259,249
Similar ratio
Find third proportional to 181,965 and 388,867.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.