Home / 128,016-279,328

Finding the Third Proportional to 128,016 and 279,328

Calculator

Solution

The third proportional to 128,016 and 279,328 is: 609,487.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,016 : 279,328 = 279,328 : x
  2. Step 2: Convert to fraction form
    128,016/279,328 = 279,328/x
  3. Step 3: Cross multiply
    128,016x = 279,328 × 279,328
  4. Step 4: Simplify right side
    128,016x = 78,024,131,584
  5. Step 5: Solve for x
    x = 78,024,131,584/128,016
  6. Step 6: Final answer
    x = 609,487.34

Related Problems

Find third proportional to 64,008 and 139,664
Half scale
Find third proportional to 256,032 and 558,656
Double scale
Find third proportional to 128,018 and 279,332
Similar ratio
Find third proportional to 192,024 and 418,992
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.