Home / 261,828-400,357

Finding the Third Proportional to 261,828 and 400,357

Calculator

Solution

The third proportional to 261,828 and 400,357 is: 612,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,828 : 400,357 = 400,357 : x
  2. Step 2: Convert to fraction form
    261,828/400,357 = 400,357/x
  3. Step 3: Cross multiply
    261,828x = 400,357 × 400,357
  4. Step 4: Simplify right side
    261,828x = 160,285,727,449
  5. Step 5: Solve for x
    x = 160,285,727,449/261,828
  6. Step 6: Final answer
    x = 612,179.47

Related Problems

Find third proportional to 130,914 and 200,178.50
Half scale
Find third proportional to 523,656 and 800,714
Double scale
Find third proportional to 261,830 and 400,360
Similar ratio
Find third proportional to 392,742 and 600,535.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.