Home / 259,396-388,518

Finding the Third Proportional to 259,396 and 388,518

Calculator

Solution

The third proportional to 259,396 and 388,518 is: 581,914.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,396 : 388,518 = 388,518 : x
  2. Step 2: Convert to fraction form
    259,396/388,518 = 388,518/x
  3. Step 3: Cross multiply
    259,396x = 388,518 × 388,518
  4. Step 4: Simplify right side
    259,396x = 150,946,236,324
  5. Step 5: Solve for x
    x = 150,946,236,324/259,396
  6. Step 6: Final answer
    x = 581,914.28

Related Problems

Find third proportional to 129,698 and 194,259
Half scale
Find third proportional to 518,792 and 777,036
Double scale
Find third proportional to 259,398 and 388,521
Similar ratio
Find third proportional to 389,094 and 582,777
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.