Home / 99,269-212,389

Finding the Third Proportional to 99,269 and 212,389

Calculator

Solution

The third proportional to 99,269 and 212,389 is: 454,412.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,269 : 212,389 = 212,389 : x
  2. Step 2: Convert to fraction form
    99,269/212,389 = 212,389/x
  3. Step 3: Cross multiply
    99,269x = 212,389 × 212,389
  4. Step 4: Simplify right side
    99,269x = 45,109,087,321
  5. Step 5: Solve for x
    x = 45,109,087,321/99,269
  6. Step 6: Final answer
    x = 454,412.63

Related Problems

Find third proportional to 49,634.50 and 106,194.50
Half scale
Find third proportional to 198,538 and 424,778
Double scale
Find third proportional to 99,271 and 212,393
Similar ratio
Find third proportional to 148,903.50 and 318,583.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.