Home / 259,204-400,290

Finding the Third Proportional to 259,204 and 400,290

Calculator

Solution

The third proportional to 259,204 and 400,290 is: 618,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,204 : 400,290 = 400,290 : x
  2. Step 2: Convert to fraction form
    259,204/400,290 = 400,290/x
  3. Step 3: Cross multiply
    259,204x = 400,290 × 400,290
  4. Step 4: Simplify right side
    259,204x = 160,232,084,100
  5. Step 5: Solve for x
    x = 160,232,084,100/259,204
  6. Step 6: Final answer
    x = 618,169.80

Related Problems

Find third proportional to 129,602 and 200,145
Half scale
Find third proportional to 518,408 and 800,580
Double scale
Find third proportional to 259,206 and 400,293
Similar ratio
Find third proportional to 388,806 and 600,435
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.