Home / 121,126-282,920

Finding the Third Proportional to 121,126 and 282,920

Calculator

Solution

The third proportional to 121,126 and 282,920 is: 660,830.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,126 : 282,920 = 282,920 : x
  2. Step 2: Convert to fraction form
    121,126/282,920 = 282,920/x
  3. Step 3: Cross multiply
    121,126x = 282,920 × 282,920
  4. Step 4: Simplify right side
    121,126x = 80,043,726,400
  5. Step 5: Solve for x
    x = 80,043,726,400/121,126
  6. Step 6: Final answer
    x = 660,830.26

Related Problems

Find third proportional to 60,563 and 141,460
Half scale
Find third proportional to 242,252 and 565,840
Double scale
Find third proportional to 121,128 and 282,925
Similar ratio
Find third proportional to 181,689 and 424,380
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.