Home / 259,702-388,520

Finding the Third Proportional to 259,702 and 388,520

Calculator

Solution

The third proportional to 259,702 and 388,520 is: 581,234.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,702 : 388,520 = 388,520 : x
  2. Step 2: Convert to fraction form
    259,702/388,520 = 388,520/x
  3. Step 3: Cross multiply
    259,702x = 388,520 × 388,520
  4. Step 4: Simplify right side
    259,702x = 150,947,790,400
  5. Step 5: Solve for x
    x = 150,947,790,400/259,702
  6. Step 6: Final answer
    x = 581,234.61

Related Problems

Find third proportional to 129,851 and 194,260
Half scale
Find third proportional to 519,404 and 777,040
Double scale
Find third proportional to 259,704 and 388,523
Similar ratio
Find third proportional to 389,553 and 582,780
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.