Home / 208,916-318,270

Finding the Third Proportional to 208,916 and 318,270

Calculator

Solution

The third proportional to 208,916 and 318,270 is: 484,863.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,916 : 318,270 = 318,270 : x
  2. Step 2: Convert to fraction form
    208,916/318,270 = 318,270/x
  3. Step 3: Cross multiply
    208,916x = 318,270 × 318,270
  4. Step 4: Simplify right side
    208,916x = 101,295,792,900
  5. Step 5: Solve for x
    x = 101,295,792,900/208,916
  6. Step 6: Final answer
    x = 484,863.74

Related Problems

Find third proportional to 104,458 and 159,135
Half scale
Find third proportional to 417,832 and 636,540
Double scale
Find third proportional to 208,918 and 318,273
Similar ratio
Find third proportional to 313,374 and 477,405
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.