Home / 142,486-221,507

Finding the Third Proportional to 142,486 and 221,507

Calculator

Solution

The third proportional to 142,486 and 221,507 is: 344,352.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,486 : 221,507 = 221,507 : x
  2. Step 2: Convert to fraction form
    142,486/221,507 = 221,507/x
  3. Step 3: Cross multiply
    142,486x = 221,507 × 221,507
  4. Step 4: Simplify right side
    142,486x = 49,065,351,049
  5. Step 5: Solve for x
    x = 49,065,351,049/142,486
  6. Step 6: Final answer
    x = 344,352.08

Related Problems

Find third proportional to 71,243 and 110,753.50
Half scale
Find third proportional to 284,972 and 443,014
Double scale
Find third proportional to 142,488 and 221,510
Similar ratio
Find third proportional to 213,729 and 332,260.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.