Home / 218,986-415,073

Finding the Third Proportional to 218,986 and 415,073

Calculator

Solution

The third proportional to 218,986 and 415,073 is: 786,742.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,986 : 415,073 = 415,073 : x
  2. Step 2: Convert to fraction form
    218,986/415,073 = 415,073/x
  3. Step 3: Cross multiply
    218,986x = 415,073 × 415,073
  4. Step 4: Simplify right side
    218,986x = 172,285,595,329
  5. Step 5: Solve for x
    x = 172,285,595,329/218,986
  6. Step 6: Final answer
    x = 786,742.51

Related Problems

Find third proportional to 109,493 and 207,536.50
Half scale
Find third proportional to 437,972 and 830,146
Double scale
Find third proportional to 218,988 and 415,077
Similar ratio
Find third proportional to 328,479 and 622,609.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.