Home / 128,438-204,550

Finding the Third Proportional to 128,438 and 204,550

Calculator

Solution

The third proportional to 128,438 and 204,550 is: 325,765.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,438 : 204,550 = 204,550 : x
  2. Step 2: Convert to fraction form
    128,438/204,550 = 204,550/x
  3. Step 3: Cross multiply
    128,438x = 204,550 × 204,550
  4. Step 4: Simplify right side
    128,438x = 41,840,702,500
  5. Step 5: Solve for x
    x = 41,840,702,500/128,438
  6. Step 6: Final answer
    x = 325,765.76

Related Problems

Find third proportional to 64,219 and 102,275
Half scale
Find third proportional to 256,876 and 409,100
Double scale
Find third proportional to 128,440 and 204,553
Similar ratio
Find third proportional to 192,657 and 306,825
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.