Home / 99,802-215,430

Finding the Third Proportional to 99,802 and 215,430

Calculator

Solution

The third proportional to 99,802 and 215,430 is: 465,021.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,802 : 215,430 = 215,430 : x
  2. Step 2: Convert to fraction form
    99,802/215,430 = 215,430/x
  3. Step 3: Cross multiply
    99,802x = 215,430 × 215,430
  4. Step 4: Simplify right side
    99,802x = 46,410,084,900
  5. Step 5: Solve for x
    x = 46,410,084,900/99,802
  6. Step 6: Final answer
    x = 465,021.59

Related Problems

Find third proportional to 49,901 and 107,715
Half scale
Find third proportional to 199,604 and 430,860
Double scale
Find third proportional to 99,804 and 215,434
Similar ratio
Find third proportional to 149,703 and 323,145
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.