Home / 218,656-320,208

Finding the Third Proportional to 218,656 and 320,208

Calculator

Solution

The third proportional to 218,656 and 320,208 is: 468,924.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,656 : 320,208 = 320,208 : x
  2. Step 2: Convert to fraction form
    218,656/320,208 = 320,208/x
  3. Step 3: Cross multiply
    218,656x = 320,208 × 320,208
  4. Step 4: Simplify right side
    218,656x = 102,533,163,264
  5. Step 5: Solve for x
    x = 102,533,163,264/218,656
  6. Step 6: Final answer
    x = 468,924.54

Related Problems

Find third proportional to 109,328 and 160,104
Half scale
Find third proportional to 437,312 and 640,416
Double scale
Find third proportional to 218,658 and 320,211
Similar ratio
Find third proportional to 327,984 and 480,312
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.