Home / 139,367-210,356

Finding the Third Proportional to 139,367 and 210,356

Calculator

Solution

The third proportional to 139,367 and 210,356 is: 317,504.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,367 : 210,356 = 210,356 : x
  2. Step 2: Convert to fraction form
    139,367/210,356 = 210,356/x
  3. Step 3: Cross multiply
    139,367x = 210,356 × 210,356
  4. Step 4: Simplify right side
    139,367x = 44,249,646,736
  5. Step 5: Solve for x
    x = 44,249,646,736/139,367
  6. Step 6: Final answer
    x = 317,504.48

Related Problems

Find third proportional to 69,683.50 and 105,178
Half scale
Find third proportional to 278,734 and 420,712
Double scale
Find third proportional to 139,369 and 210,359
Similar ratio
Find third proportional to 209,050.50 and 315,534
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.