Home / 139,376-210,369

Finding the Third Proportional to 139,376 and 210,369

Calculator

Solution

The third proportional to 139,376 and 210,369 is: 317,523.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,376 : 210,369 = 210,369 : x
  2. Step 2: Convert to fraction form
    139,376/210,369 = 210,369/x
  3. Step 3: Cross multiply
    139,376x = 210,369 × 210,369
  4. Step 4: Simplify right side
    139,376x = 44,255,116,161
  5. Step 5: Solve for x
    x = 44,255,116,161/139,376
  6. Step 6: Final answer
    x = 317,523.22

Related Problems

Find third proportional to 69,688 and 105,184.50
Half scale
Find third proportional to 278,752 and 420,738
Double scale
Find third proportional to 139,378 and 210,372
Similar ratio
Find third proportional to 209,064 and 315,553.50
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.