Home / 129,904-285,324

Finding the Third Proportional to 129,904 and 285,324

Calculator

Solution

The third proportional to 129,904 and 285,324 is: 626,691.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,904 : 285,324 = 285,324 : x
  2. Step 2: Convert to fraction form
    129,904/285,324 = 285,324/x
  3. Step 3: Cross multiply
    129,904x = 285,324 × 285,324
  4. Step 4: Simplify right side
    129,904x = 81,409,784,976
  5. Step 5: Solve for x
    x = 81,409,784,976/129,904
  6. Step 6: Final answer
    x = 626,691.90

Related Problems

Find third proportional to 64,952 and 142,662
Half scale
Find third proportional to 259,808 and 570,648
Double scale
Find third proportional to 129,906 and 285,328
Similar ratio
Find third proportional to 194,856 and 427,986
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.