Home / 142,938-210,249

Finding the Third Proportional to 142,938 and 210,249

Calculator

Solution

The third proportional to 142,938 and 210,249 is: 309,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,938 : 210,249 = 210,249 : x
  2. Step 2: Convert to fraction form
    142,938/210,249 = 210,249/x
  3. Step 3: Cross multiply
    142,938x = 210,249 × 210,249
  4. Step 4: Simplify right side
    142,938x = 44,204,642,001
  5. Step 5: Solve for x
    x = 44,204,642,001/142,938
  6. Step 6: Final answer
    x = 309,257.45

Related Problems

Find third proportional to 71,469 and 105,124.50
Half scale
Find third proportional to 285,876 and 420,498
Double scale
Find third proportional to 142,940 and 210,252
Similar ratio
Find third proportional to 214,407 and 315,373.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.