Home / 100,424-218,128

Finding the Third Proportional to 100,424 and 218,128

Calculator

Solution

The third proportional to 100,424 and 218,128 is: 473,789.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,424 : 218,128 = 218,128 : x
  2. Step 2: Convert to fraction form
    100,424/218,128 = 218,128/x
  3. Step 3: Cross multiply
    100,424x = 218,128 × 218,128
  4. Step 4: Simplify right side
    100,424x = 47,579,824,384
  5. Step 5: Solve for x
    x = 47,579,824,384/100,424
  6. Step 6: Final answer
    x = 473,789.38

Related Problems

Find third proportional to 50,212 and 109,064
Half scale
Find third proportional to 200,848 and 436,256
Double scale
Find third proportional to 100,426 and 218,132
Similar ratio
Find third proportional to 150,636 and 327,192
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.