Home / 129,128-279,004

Finding the Third Proportional to 129,128 and 279,004

Calculator

Solution

The third proportional to 129,128 and 279,004 is: 602,837.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,128 : 279,004 = 279,004 : x
  2. Step 2: Convert to fraction form
    129,128/279,004 = 279,004/x
  3. Step 3: Cross multiply
    129,128x = 279,004 × 279,004
  4. Step 4: Simplify right side
    129,128x = 77,843,232,016
  5. Step 5: Solve for x
    x = 77,843,232,016/129,128
  6. Step 6: Final answer
    x = 602,837.74

Related Problems

Find third proportional to 64,564 and 139,502
Half scale
Find third proportional to 258,256 and 558,008
Double scale
Find third proportional to 129,130 and 279,008
Similar ratio
Find third proportional to 193,692 and 418,506
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.