Home / 143,108-210,286

Finding the Third Proportional to 143,108 and 210,286

Calculator

Solution

The third proportional to 143,108 and 210,286 is: 308,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,108 : 210,286 = 210,286 : x
  2. Step 2: Convert to fraction form
    143,108/210,286 = 210,286/x
  3. Step 3: Cross multiply
    143,108x = 210,286 × 210,286
  4. Step 4: Simplify right side
    143,108x = 44,220,201,796
  5. Step 5: Solve for x
    x = 44,220,201,796/143,108
  6. Step 6: Final answer
    x = 308,998.81

Related Problems

Find third proportional to 71,554 and 105,143
Half scale
Find third proportional to 286,216 and 420,572
Double scale
Find third proportional to 143,110 and 210,289
Similar ratio
Find third proportional to 214,662 and 315,429
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.