Home / 198,720-291,744

Finding the Third Proportional to 198,720 and 291,744

Calculator

Solution

The third proportional to 198,720 and 291,744 is: 428,314.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,720 : 291,744 = 291,744 : x
  2. Step 2: Convert to fraction form
    198,720/291,744 = 291,744/x
  3. Step 3: Cross multiply
    198,720x = 291,744 × 291,744
  4. Step 4: Simplify right side
    198,720x = 85,114,561,536
  5. Step 5: Solve for x
    x = 85,114,561,536/198,720
  6. Step 6: Final answer
    x = 428,314.02

Related Problems

Find third proportional to 99,360 and 145,872
Half scale
Find third proportional to 397,440 and 583,488
Double scale
Find third proportional to 198,722 and 291,747
Similar ratio
Find third proportional to 298,080 and 437,616
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.