Home / 218,407-329,151

Finding the Third Proportional to 218,407 and 329,151

Calculator

Solution

The third proportional to 218,407 and 329,151 is: 496,048.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,407 : 329,151 = 329,151 : x
  2. Step 2: Convert to fraction form
    218,407/329,151 = 329,151/x
  3. Step 3: Cross multiply
    218,407x = 329,151 × 329,151
  4. Step 4: Simplify right side
    218,407x = 108,340,380,801
  5. Step 5: Solve for x
    x = 108,340,380,801/218,407
  6. Step 6: Final answer
    x = 496,048.12

Related Problems

Find third proportional to 109,203.50 and 164,575.50
Half scale
Find third proportional to 436,814 and 658,302
Double scale
Find third proportional to 218,409 and 329,154
Similar ratio
Find third proportional to 327,610.50 and 493,726.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.