Home / 121,178-248,386

Finding the Third Proportional to 121,178 and 248,386

Calculator

Solution

The third proportional to 121,178 and 248,386 is: 509,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,178 : 248,386 = 248,386 : x
  2. Step 2: Convert to fraction form
    121,178/248,386 = 248,386/x
  3. Step 3: Cross multiply
    121,178x = 248,386 × 248,386
  4. Step 4: Simplify right side
    121,178x = 61,695,604,996
  5. Step 5: Solve for x
    x = 61,695,604,996/121,178
  6. Step 6: Final answer
    x = 509,132.06

Related Problems

Find third proportional to 60,589 and 124,193
Half scale
Find third proportional to 242,356 and 496,772
Double scale
Find third proportional to 121,180 and 248,390
Similar ratio
Find third proportional to 181,767 and 372,579
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.