Home / 213,360-321,700

Finding the Third Proportional to 213,360 and 321,700

Calculator

Solution

The third proportional to 213,360 and 321,700 is: 485,052.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,360 : 321,700 = 321,700 : x
  2. Step 2: Convert to fraction form
    213,360/321,700 = 321,700/x
  3. Step 3: Cross multiply
    213,360x = 321,700 × 321,700
  4. Step 4: Simplify right side
    213,360x = 103,490,890,000
  5. Step 5: Solve for x
    x = 103,490,890,000/213,360
  6. Step 6: Final answer
    x = 485,052.92

Related Problems

Find third proportional to 106,680 and 160,850
Half scale
Find third proportional to 426,720 and 643,400
Double scale
Find third proportional to 213,362 and 321,703
Similar ratio
Find third proportional to 320,040 and 482,550
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.