Home / 320,211-502,290

Finding the Third Proportional to 320,211 and 502,290

Calculator

Solution

The third proportional to 320,211 and 502,290 is: 787,903.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,211 : 502,290 = 502,290 : x
  2. Step 2: Convert to fraction form
    320,211/502,290 = 502,290/x
  3. Step 3: Cross multiply
    320,211x = 502,290 × 502,290
  4. Step 4: Simplify right side
    320,211x = 252,295,244,100
  5. Step 5: Solve for x
    x = 252,295,244,100/320,211
  6. Step 6: Final answer
    x = 787,903.11

Related Problems

Find third proportional to 160,105.50 and 251,145
Half scale
Find third proportional to 640,422 and 1,004,580
Double scale
Find third proportional to 320,213 and 502,293
Similar ratio
Find third proportional to 480,316.50 and 753,435
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.