Home / 217,790-326,685

Finding the Third Proportional to 217,790 and 326,685

Calculator

Solution

The third proportional to 217,790 and 326,685 is: 490,027.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,790 : 326,685 = 326,685 : x
  2. Step 2: Convert to fraction form
    217,790/326,685 = 326,685/x
  3. Step 3: Cross multiply
    217,790x = 326,685 × 326,685
  4. Step 4: Simplify right side
    217,790x = 106,723,089,225
  5. Step 5: Solve for x
    x = 106,723,089,225/217,790
  6. Step 6: Final answer
    x = 490,027.50

Related Problems

Find third proportional to 108,895 and 163,342.50
Half scale
Find third proportional to 435,580 and 653,370
Double scale
Find third proportional to 217,792 and 326,688
Similar ratio
Find third proportional to 326,685 and 490,027.50
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.