Home / 138,636-220,374

Finding the Third Proportional to 138,636 and 220,374

Calculator

Solution

The third proportional to 138,636 and 220,374 is: 350,303.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,636 : 220,374 = 220,374 : x
  2. Step 2: Convert to fraction form
    138,636/220,374 = 220,374/x
  3. Step 3: Cross multiply
    138,636x = 220,374 × 220,374
  4. Step 4: Simplify right side
    138,636x = 48,564,699,876
  5. Step 5: Solve for x
    x = 48,564,699,876/138,636
  6. Step 6: Final answer
    x = 350,303.67

Related Problems

Find third proportional to 69,318 and 110,187
Half scale
Find third proportional to 277,272 and 440,748
Double scale
Find third proportional to 138,638 and 220,377
Similar ratio
Find third proportional to 207,954 and 330,561
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.