Home / 172,936-378,678

Finding the Third Proportional to 172,936 and 378,678

Calculator

Solution

The third proportional to 172,936 and 378,678 is: 829,191.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,936 : 378,678 = 378,678 : x
  2. Step 2: Convert to fraction form
    172,936/378,678 = 378,678/x
  3. Step 3: Cross multiply
    172,936x = 378,678 × 378,678
  4. Step 4: Simplify right side
    172,936x = 143,397,027,684
  5. Step 5: Solve for x
    x = 143,397,027,684/172,936
  6. Step 6: Final answer
    x = 829,191.31

Related Problems

Find third proportional to 86,468 and 189,339
Half scale
Find third proportional to 345,872 and 757,356
Double scale
Find third proportional to 172,938 and 378,682
Similar ratio
Find third proportional to 259,404 and 568,017
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.