Home / 128,424-279,096

Finding the Third Proportional to 128,424 and 279,096

Calculator

Solution

The third proportional to 128,424 and 279,096 is: 606,542.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,424 : 279,096 = 279,096 : x
  2. Step 2: Convert to fraction form
    128,424/279,096 = 279,096/x
  3. Step 3: Cross multiply
    128,424x = 279,096 × 279,096
  4. Step 4: Simplify right side
    128,424x = 77,894,577,216
  5. Step 5: Solve for x
    x = 77,894,577,216/128,424
  6. Step 6: Final answer
    x = 606,542.21

Related Problems

Find third proportional to 64,212 and 139,548
Half scale
Find third proportional to 256,848 and 558,192
Double scale
Find third proportional to 128,426 and 279,100
Similar ratio
Find third proportional to 192,636 and 418,644
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.