Home / 129,258-273,418

Finding the Third Proportional to 129,258 and 273,418

Calculator

Solution

The third proportional to 129,258 and 273,418 is: 578,358.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,258 : 273,418 = 273,418 : x
  2. Step 2: Convert to fraction form
    129,258/273,418 = 273,418/x
  3. Step 3: Cross multiply
    129,258x = 273,418 × 273,418
  4. Step 4: Simplify right side
    129,258x = 74,757,402,724
  5. Step 5: Solve for x
    x = 74,757,402,724/129,258
  6. Step 6: Final answer
    x = 578,358.03

Related Problems

Find third proportional to 64,629 and 136,709
Half scale
Find third proportional to 258,516 and 546,836
Double scale
Find third proportional to 129,260 and 273,422
Similar ratio
Find third proportional to 193,887 and 410,127
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.