Home / 218,436-331,036

Finding the Third Proportional to 218,436 and 331,036

Calculator

Solution

The third proportional to 218,436 and 331,036 is: 501,679.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,436 : 331,036 = 331,036 : x
  2. Step 2: Convert to fraction form
    218,436/331,036 = 331,036/x
  3. Step 3: Cross multiply
    218,436x = 331,036 × 331,036
  4. Step 4: Simplify right side
    218,436x = 109,584,833,296
  5. Step 5: Solve for x
    x = 109,584,833,296/218,436
  6. Step 6: Final answer
    x = 501,679.36

Related Problems

Find third proportional to 109,218 and 165,518
Half scale
Find third proportional to 436,872 and 662,072
Double scale
Find third proportional to 218,438 and 331,039
Similar ratio
Find third proportional to 327,654 and 496,554
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.