Home / 211,351-309,251

Finding the Third Proportional to 211,351 and 309,251

Calculator

Solution

The third proportional to 211,351 and 309,251 is: 452,499.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,351 : 309,251 = 309,251 : x
  2. Step 2: Convert to fraction form
    211,351/309,251 = 309,251/x
  3. Step 3: Cross multiply
    211,351x = 309,251 × 309,251
  4. Step 4: Simplify right side
    211,351x = 95,636,181,001
  5. Step 5: Solve for x
    x = 95,636,181,001/211,351
  6. Step 6: Final answer
    x = 452,499.31

Related Problems

Find third proportional to 105,675.50 and 154,625.50
Half scale
Find third proportional to 422,702 and 618,502
Double scale
Find third proportional to 211,353 and 309,254
Similar ratio
Find third proportional to 317,026.50 and 463,876.50
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.