Home / 217,956-328,190

Finding the Third Proportional to 217,956 and 328,190

Calculator

Solution

The third proportional to 217,956 and 328,190 is: 494,176.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,956 : 328,190 = 328,190 : x
  2. Step 2: Convert to fraction form
    217,956/328,190 = 328,190/x
  3. Step 3: Cross multiply
    217,956x = 328,190 × 328,190
  4. Step 4: Simplify right side
    217,956x = 107,708,676,100
  5. Step 5: Solve for x
    x = 107,708,676,100/217,956
  6. Step 6: Final answer
    x = 494,176.24

Related Problems

Find third proportional to 108,978 and 164,095
Half scale
Find third proportional to 435,912 and 656,380
Double scale
Find third proportional to 217,958 and 328,193
Similar ratio
Find third proportional to 326,934 and 492,285
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.