Home / 138,327-211,506

Finding the Third Proportional to 138,327 and 211,506

Calculator

Solution

The third proportional to 138,327 and 211,506 is: 323,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,327 : 211,506 = 211,506 : x
  2. Step 2: Convert to fraction form
    138,327/211,506 = 211,506/x
  3. Step 3: Cross multiply
    138,327x = 211,506 × 211,506
  4. Step 4: Simplify right side
    138,327x = 44,734,788,036
  5. Step 5: Solve for x
    x = 44,734,788,036/138,327
  6. Step 6: Final answer
    x = 323,398.82

Related Problems

Find third proportional to 69,163.50 and 105,753
Half scale
Find third proportional to 276,654 and 423,012
Double scale
Find third proportional to 138,329 and 211,509
Similar ratio
Find third proportional to 207,490.50 and 317,259
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.