Home / 206,585-318,990

Finding the Third Proportional to 206,585 and 318,990

Calculator

Solution

The third proportional to 206,585 and 318,990 is: 492,555.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,585 : 318,990 = 318,990 : x
  2. Step 2: Convert to fraction form
    206,585/318,990 = 318,990/x
  3. Step 3: Cross multiply
    206,585x = 318,990 × 318,990
  4. Step 4: Simplify right side
    206,585x = 101,754,620,100
  5. Step 5: Solve for x
    x = 101,754,620,100/206,585
  6. Step 6: Final answer
    x = 492,555.70

Related Problems

Find third proportional to 103,292.50 and 159,495
Half scale
Find third proportional to 413,170 and 637,980
Double scale
Find third proportional to 206,587 and 318,993
Similar ratio
Find third proportional to 309,877.50 and 478,485
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.