Home / 206,600-290,928

Finding the Third Proportional to 206,600 and 290,928

Calculator

Solution

The third proportional to 206,600 and 290,928 is: 409,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,600 : 290,928 = 290,928 : x
  2. Step 2: Convert to fraction form
    206,600/290,928 = 290,928/x
  3. Step 3: Cross multiply
    206,600x = 290,928 × 290,928
  4. Step 4: Simplify right side
    206,600x = 84,639,101,184
  5. Step 5: Solve for x
    x = 84,639,101,184/206,600
  6. Step 6: Final answer
    x = 409,676.19

Related Problems

Find third proportional to 103,300 and 145,464
Half scale
Find third proportional to 413,200 and 581,856
Double scale
Find third proportional to 206,602 and 290,931
Similar ratio
Find third proportional to 309,900 and 436,392
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.