Home / 128,704-204,800

Finding the Third Proportional to 128,704 and 204,800

Calculator

Solution

The third proportional to 128,704 and 204,800 is: 325,887.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,704 : 204,800 = 204,800 : x
  2. Step 2: Convert to fraction form
    128,704/204,800 = 204,800/x
  3. Step 3: Cross multiply
    128,704x = 204,800 × 204,800
  4. Step 4: Simplify right side
    128,704x = 41,943,040,000
  5. Step 5: Solve for x
    x = 41,943,040,000/128,704
  6. Step 6: Final answer
    x = 325,887.62

Related Problems

Find third proportional to 64,352 and 102,400
Half scale
Find third proportional to 257,408 and 409,600
Double scale
Find third proportional to 128,706 and 204,803
Similar ratio
Find third proportional to 193,056 and 307,200
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.