Home / 121,409-247,637

Finding the Third Proportional to 121,409 and 247,637

Calculator

Solution

The third proportional to 121,409 and 247,637 is: 505,103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,409 : 247,637 = 247,637 : x
  2. Step 2: Convert to fraction form
    121,409/247,637 = 247,637/x
  3. Step 3: Cross multiply
    121,409x = 247,637 × 247,637
  4. Step 4: Simplify right side
    121,409x = 61,324,083,769
  5. Step 5: Solve for x
    x = 61,324,083,769/121,409
  6. Step 6: Final answer
    x = 505,103.28

Related Problems

Find third proportional to 60,704.50 and 123,818.50
Half scale
Find third proportional to 242,818 and 495,274
Double scale
Find third proportional to 121,411 and 247,641
Similar ratio
Find third proportional to 182,113.50 and 371,455.50
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.