Home / 218,790-327,820.50

Finding the Third Proportional to 218,790 and 327,820.50

Calculator

Solution

The third proportional to 218,790 and 327,820.50 is: 491,184.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,790 : 327,820.50 = 327,820.50 : x
  2. Step 2: Convert to fraction form
    218,790/327,820.50 = 327,820.50/x
  3. Step 3: Cross multiply
    218,790x = 327,820.50 × 327,820.50
  4. Step 4: Simplify right side
    218,790x = 107,466,280,220.25
  5. Step 5: Solve for x
    x = 107,466,280,220.25/218,790
  6. Step 6: Final answer
    x = 491,184.61

Related Problems

Find third proportional to 109,395 and 163,910.25
Half scale
Find third proportional to 437,580 and 655,641
Double scale
Find third proportional to 218,792 and 327,823
Similar ratio
Find third proportional to 328,185 and 491,730.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.