Home / 109,200-239,815

Finding the Third Proportional to 109,200 and 239,815

Calculator

Solution

The third proportional to 109,200 and 239,815 is: 526,659.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,200 : 239,815 = 239,815 : x
  2. Step 2: Convert to fraction form
    109,200/239,815 = 239,815/x
  3. Step 3: Cross multiply
    109,200x = 239,815 × 239,815
  4. Step 4: Simplify right side
    109,200x = 57,511,234,225
  5. Step 5: Solve for x
    x = 57,511,234,225/109,200
  6. Step 6: Final answer
    x = 526,659.65

Related Problems

Find third proportional to 54,600 and 119,907.50
Half scale
Find third proportional to 218,400 and 479,630
Double scale
Find third proportional to 109,202 and 239,819
Similar ratio
Find third proportional to 163,800 and 359,722.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.