Home / 90,684-210,810

Finding the Third Proportional to 90,684 and 210,810

Calculator

Solution

The third proportional to 90,684 and 210,810 is: 490,062.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,684 : 210,810 = 210,810 : x
  2. Step 2: Convert to fraction form
    90,684/210,810 = 210,810/x
  3. Step 3: Cross multiply
    90,684x = 210,810 × 210,810
  4. Step 4: Simplify right side
    90,684x = 44,440,856,100
  5. Step 5: Solve for x
    x = 44,440,856,100/90,684
  6. Step 6: Final answer
    x = 490,062.81

Related Problems

Find third proportional to 45,342 and 105,405
Half scale
Find third proportional to 181,368 and 421,620
Double scale
Find third proportional to 90,686 and 210,815
Similar ratio
Find third proportional to 136,026 and 316,215
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.