Home / 99,819-218,961.75

Finding the Third Proportional to 99,819 and 218,961.75

Calculator

Solution

The third proportional to 99,819 and 218,961.75 is: 480,311.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,819 : 218,961.75 = 218,961.75 : x
  2. Step 2: Convert to fraction form
    99,819/218,961.75 = 218,961.75/x
  3. Step 3: Cross multiply
    99,819x = 218,961.75 × 218,961.75
  4. Step 4: Simplify right side
    99,819x = 47,944,247,963.06
  5. Step 5: Solve for x
    x = 47,944,247,963.06/99,819
  6. Step 6: Final answer
    x = 480,311.84

Related Problems

Find third proportional to 49,909.50 and 109,480.88
Half scale
Find third proportional to 199,638 and 437,923.50
Double scale
Find third proportional to 99,821 and 218,966
Similar ratio
Find third proportional to 149,728.50 and 328,442.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.