Home / 98,820-217,320

Finding the Third Proportional to 98,820 and 217,320

Calculator

Solution

The third proportional to 98,820 and 217,320 is: 477,919.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,820 : 217,320 = 217,320 : x
  2. Step 2: Convert to fraction form
    98,820/217,320 = 217,320/x
  3. Step 3: Cross multiply
    98,820x = 217,320 × 217,320
  4. Step 4: Simplify right side
    98,820x = 47,227,982,400
  5. Step 5: Solve for x
    x = 47,227,982,400/98,820
  6. Step 6: Final answer
    x = 477,919.27

Related Problems

Find third proportional to 49,410 and 108,660
Half scale
Find third proportional to 197,640 and 434,640
Double scale
Find third proportional to 98,822 and 217,324
Similar ratio
Find third proportional to 148,230 and 325,980
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.