Home / 172,800-270,486

Finding the Third Proportional to 172,800 and 270,486

Calculator

Solution

The third proportional to 172,800 and 270,486 is: 423,395.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,800 : 270,486 = 270,486 : x
  2. Step 2: Convert to fraction form
    172,800/270,486 = 270,486/x
  3. Step 3: Cross multiply
    172,800x = 270,486 × 270,486
  4. Step 4: Simplify right side
    172,800x = 73,162,676,196
  5. Step 5: Solve for x
    x = 73,162,676,196/172,800
  6. Step 6: Final answer
    x = 423,395.12

Related Problems

Find third proportional to 86,400 and 135,243
Half scale
Find third proportional to 345,600 and 540,972
Double scale
Find third proportional to 172,802 and 270,489
Similar ratio
Find third proportional to 259,200 and 405,729
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.