Home / 209,068-318,518

Finding the Third Proportional to 209,068 and 318,518

Calculator

Solution

The third proportional to 209,068 and 318,518 is: 485,266.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,068 : 318,518 = 318,518 : x
  2. Step 2: Convert to fraction form
    209,068/318,518 = 318,518/x
  3. Step 3: Cross multiply
    209,068x = 318,518 × 318,518
  4. Step 4: Simplify right side
    209,068x = 101,453,716,324
  5. Step 5: Solve for x
    x = 101,453,716,324/209,068
  6. Step 6: Final answer
    x = 485,266.59

Related Problems

Find third proportional to 104,534 and 159,259
Half scale
Find third proportional to 418,136 and 637,036
Double scale
Find third proportional to 209,070 and 318,521
Similar ratio
Find third proportional to 313,602 and 477,777
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.