Home / 120,236-256,556

Finding the Third Proportional to 120,236 and 256,556

Calculator

Solution

The third proportional to 120,236 and 256,556 is: 547,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,236 : 256,556 = 256,556 : x
  2. Step 2: Convert to fraction form
    120,236/256,556 = 256,556/x
  3. Step 3: Cross multiply
    120,236x = 256,556 × 256,556
  4. Step 4: Simplify right side
    120,236x = 65,820,981,136
  5. Step 5: Solve for x
    x = 65,820,981,136/120,236
  6. Step 6: Final answer
    x = 547,431.56

Related Problems

Find third proportional to 60,118 and 128,278
Half scale
Find third proportional to 240,472 and 513,112
Double scale
Find third proportional to 120,238 and 256,560
Similar ratio
Find third proportional to 180,354 and 384,834
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.