Home / 128,826-279,097

Finding the Third Proportional to 128,826 and 279,097

Calculator

Solution

The third proportional to 128,826 and 279,097 is: 604,653.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,826 : 279,097 = 279,097 : x
  2. Step 2: Convert to fraction form
    128,826/279,097 = 279,097/x
  3. Step 3: Cross multiply
    128,826x = 279,097 × 279,097
  4. Step 4: Simplify right side
    128,826x = 77,895,135,409
  5. Step 5: Solve for x
    x = 77,895,135,409/128,826
  6. Step 6: Final answer
    x = 604,653.84

Related Problems

Find third proportional to 64,413 and 139,548.50
Half scale
Find third proportional to 257,652 and 558,194
Double scale
Find third proportional to 128,828 and 279,101
Similar ratio
Find third proportional to 193,239 and 418,645.50
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.