Home / 217,690-336,243

Finding the Third Proportional to 217,690 and 336,243

Calculator

Solution

The third proportional to 217,690 and 336,243 is: 519,359.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,690 : 336,243 = 336,243 : x
  2. Step 2: Convert to fraction form
    217,690/336,243 = 336,243/x
  3. Step 3: Cross multiply
    217,690x = 336,243 × 336,243
  4. Step 4: Simplify right side
    217,690x = 113,059,355,049
  5. Step 5: Solve for x
    x = 113,059,355,049/217,690
  6. Step 6: Final answer
    x = 519,359.43

Related Problems

Find third proportional to 108,845 and 168,121.50
Half scale
Find third proportional to 435,380 and 672,486
Double scale
Find third proportional to 217,692 and 336,246
Similar ratio
Find third proportional to 326,535 and 504,364.50
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.