Home / 198,303-386,643

Finding the Third Proportional to 198,303 and 386,643

Calculator

Solution

The third proportional to 198,303 and 386,643 is: 753,860.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,303 : 386,643 = 386,643 : x
  2. Step 2: Convert to fraction form
    198,303/386,643 = 386,643/x
  3. Step 3: Cross multiply
    198,303x = 386,643 × 386,643
  4. Step 4: Simplify right side
    198,303x = 149,492,809,449
  5. Step 5: Solve for x
    x = 149,492,809,449/198,303
  6. Step 6: Final answer
    x = 753,860.55

Related Problems

Find third proportional to 99,151.50 and 193,321.50
Half scale
Find third proportional to 396,606 and 773,286
Double scale
Find third proportional to 198,305 and 386,647
Similar ratio
Find third proportional to 297,454.50 and 579,964.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.