Home / 217,709-336,272

Finding the Third Proportional to 217,709 and 336,272

Calculator

Solution

The third proportional to 217,709 and 336,272 is: 519,403.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,709 : 336,272 = 336,272 : x
  2. Step 2: Convert to fraction form
    217,709/336,272 = 336,272/x
  3. Step 3: Cross multiply
    217,709x = 336,272 × 336,272
  4. Step 4: Simplify right side
    217,709x = 113,078,857,984
  5. Step 5: Solve for x
    x = 113,078,857,984/217,709
  6. Step 6: Final answer
    x = 519,403.69

Related Problems

Find third proportional to 108,854.50 and 168,136
Half scale
Find third proportional to 435,418 and 672,544
Double scale
Find third proportional to 217,711 and 336,275
Similar ratio
Find third proportional to 326,563.50 and 504,408
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.