Home / 276,108-418,321

Finding the Third Proportional to 276,108 and 418,321

Calculator

Solution

The third proportional to 276,108 and 418,321 is: 633,782.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,108 : 418,321 = 418,321 : x
  2. Step 2: Convert to fraction form
    276,108/418,321 = 418,321/x
  3. Step 3: Cross multiply
    276,108x = 418,321 × 418,321
  4. Step 4: Simplify right side
    276,108x = 174,992,459,041
  5. Step 5: Solve for x
    x = 174,992,459,041/276,108
  6. Step 6: Final answer
    x = 633,782.65

Related Problems

Find third proportional to 138,054 and 209,160.50
Half scale
Find third proportional to 552,216 and 836,642
Double scale
Find third proportional to 276,110 and 418,324
Similar ratio
Find third proportional to 414,162 and 627,481.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.