Home / 144,121-212,456

Finding the Third Proportional to 144,121 and 212,456

Calculator

Solution

The third proportional to 144,121 and 212,456 is: 313,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,121 : 212,456 = 212,456 : x
  2. Step 2: Convert to fraction form
    144,121/212,456 = 212,456/x
  3. Step 3: Cross multiply
    144,121x = 212,456 × 212,456
  4. Step 4: Simplify right side
    144,121x = 45,137,551,936
  5. Step 5: Solve for x
    x = 45,137,551,936/144,121
  6. Step 6: Final answer
    x = 313,192.05

Related Problems

Find third proportional to 72,060.50 and 106,228
Half scale
Find third proportional to 288,242 and 424,912
Double scale
Find third proportional to 144,123 and 212,459
Similar ratio
Find third proportional to 216,181.50 and 318,684
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.