Home / 121,406-247,630

Finding the Third Proportional to 121,406 and 247,630

Calculator

Solution

The third proportional to 121,406 and 247,630 is: 505,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,406 : 247,630 = 247,630 : x
  2. Step 2: Convert to fraction form
    121,406/247,630 = 247,630/x
  3. Step 3: Cross multiply
    121,406x = 247,630 × 247,630
  4. Step 4: Simplify right side
    121,406x = 61,320,616,900
  5. Step 5: Solve for x
    x = 61,320,616,900/121,406
  6. Step 6: Final answer
    x = 505,087.20

Related Problems

Find third proportional to 60,703 and 123,815
Half scale
Find third proportional to 242,812 and 495,260
Double scale
Find third proportional to 121,408 and 247,634
Similar ratio
Find third proportional to 182,109 and 371,445
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.