Home / 247,356-398,268

Finding the Third Proportional to 247,356 and 398,268

Calculator

Solution

The third proportional to 247,356 and 398,268 is: 641,251.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,356 : 398,268 = 398,268 : x
  2. Step 2: Convert to fraction form
    247,356/398,268 = 398,268/x
  3. Step 3: Cross multiply
    247,356x = 398,268 × 398,268
  4. Step 4: Simplify right side
    247,356x = 158,617,399,824
  5. Step 5: Solve for x
    x = 158,617,399,824/247,356
  6. Step 6: Final answer
    x = 641,251.47

Related Problems

Find third proportional to 123,678 and 199,134
Half scale
Find third proportional to 494,712 and 796,536
Double scale
Find third proportional to 247,358 and 398,271
Similar ratio
Find third proportional to 371,034 and 597,402
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.