Home / 207,928-321,828

Finding the Third Proportional to 207,928 and 321,828

Calculator

Solution

The third proportional to 207,928 and 321,828 is: 498,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,928 : 321,828 = 321,828 : x
  2. Step 2: Convert to fraction form
    207,928/321,828 = 321,828/x
  3. Step 3: Cross multiply
    207,928x = 321,828 × 321,828
  4. Step 4: Simplify right side
    207,928x = 103,573,261,584
  5. Step 5: Solve for x
    x = 103,573,261,584/207,928
  6. Step 6: Final answer
    x = 498,120.80

Related Problems

Find third proportional to 103,964 and 160,914
Half scale
Find third proportional to 415,856 and 643,656
Double scale
Find third proportional to 207,930 and 321,831
Similar ratio
Find third proportional to 311,892 and 482,742
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.