Home / 129,534-280,135

Finding the Third Proportional to 129,534 and 280,135

Calculator

Solution

The third proportional to 129,534 and 280,135 is: 605,830.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,534 : 280,135 = 280,135 : x
  2. Step 2: Convert to fraction form
    129,534/280,135 = 280,135/x
  3. Step 3: Cross multiply
    129,534x = 280,135 × 280,135
  4. Step 4: Simplify right side
    129,534x = 78,475,618,225
  5. Step 5: Solve for x
    x = 78,475,618,225/129,534
  6. Step 6: Final answer
    x = 605,830.27

Related Problems

Find third proportional to 64,767 and 140,067.50
Half scale
Find third proportional to 259,068 and 560,270
Double scale
Find third proportional to 129,536 and 280,139
Similar ratio
Find third proportional to 194,301 and 420,202.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.