Home / 201,812-428,228

Finding the Third Proportional to 201,812 and 428,228

Calculator

Solution

The third proportional to 201,812 and 428,228 is: 908,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,812 : 428,228 = 428,228 : x
  2. Step 2: Convert to fraction form
    201,812/428,228 = 428,228/x
  3. Step 3: Cross multiply
    201,812x = 428,228 × 428,228
  4. Step 4: Simplify right side
    201,812x = 183,379,219,984
  5. Step 5: Solve for x
    x = 183,379,219,984/201,812
  6. Step 6: Final answer
    x = 908,663.61

Related Problems

Find third proportional to 100,906 and 214,114
Half scale
Find third proportional to 403,624 and 856,456
Double scale
Find third proportional to 201,814 and 428,232
Similar ratio
Find third proportional to 302,718 and 642,342
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.