Home / 212,292-309,687

Finding the Third Proportional to 212,292 and 309,687

Calculator

Solution

The third proportional to 212,292 and 309,687 is: 451,764.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,292 : 309,687 = 309,687 : x
  2. Step 2: Convert to fraction form
    212,292/309,687 = 309,687/x
  3. Step 3: Cross multiply
    212,292x = 309,687 × 309,687
  4. Step 4: Simplify right side
    212,292x = 95,906,037,969
  5. Step 5: Solve for x
    x = 95,906,037,969/212,292
  6. Step 6: Final answer
    x = 451,764.73

Related Problems

Find third proportional to 106,146 and 154,843.50
Half scale
Find third proportional to 424,584 and 619,374
Double scale
Find third proportional to 212,294 and 309,690
Similar ratio
Find third proportional to 318,438 and 464,530.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.