Home / 121,256-248,520

Finding the Third Proportional to 121,256 and 248,520

Calculator

Solution

The third proportional to 121,256 and 248,520 is: 509,353.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,256 : 248,520 = 248,520 : x
  2. Step 2: Convert to fraction form
    121,256/248,520 = 248,520/x
  3. Step 3: Cross multiply
    121,256x = 248,520 × 248,520
  4. Step 4: Simplify right side
    121,256x = 61,762,190,400
  5. Step 5: Solve for x
    x = 61,762,190,400/121,256
  6. Step 6: Final answer
    x = 509,353.68

Related Problems

Find third proportional to 60,628 and 124,260
Half scale
Find third proportional to 242,512 and 497,040
Double scale
Find third proportional to 121,258 and 248,524
Similar ratio
Find third proportional to 181,884 and 372,780
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.