Home / 99,406-213,643

Finding the Third Proportional to 99,406 and 213,643

Calculator

Solution

The third proportional to 99,406 and 213,643 is: 459,160.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,406 : 213,643 = 213,643 : x
  2. Step 2: Convert to fraction form
    99,406/213,643 = 213,643/x
  3. Step 3: Cross multiply
    99,406x = 213,643 × 213,643
  4. Step 4: Simplify right side
    99,406x = 45,643,331,449
  5. Step 5: Solve for x
    x = 45,643,331,449/99,406
  6. Step 6: Final answer
    x = 459,160.73

Related Problems

Find third proportional to 49,703 and 106,821.50
Half scale
Find third proportional to 198,812 and 427,286
Double scale
Find third proportional to 99,408 and 213,647
Similar ratio
Find third proportional to 149,109 and 320,464.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.