Home / 209,008-318,402

Finding the Third Proportional to 209,008 and 318,402

Calculator

Solution

The third proportional to 209,008 and 318,402 is: 485,052.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,008 : 318,402 = 318,402 : x
  2. Step 2: Convert to fraction form
    209,008/318,402 = 318,402/x
  3. Step 3: Cross multiply
    209,008x = 318,402 × 318,402
  4. Step 4: Simplify right side
    209,008x = 101,379,833,604
  5. Step 5: Solve for x
    x = 101,379,833,604/209,008
  6. Step 6: Final answer
    x = 485,052.41

Related Problems

Find third proportional to 104,504 and 159,201
Half scale
Find third proportional to 418,016 and 636,804
Double scale
Find third proportional to 209,010 and 318,405
Similar ratio
Find third proportional to 313,512 and 477,603
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.