Home / 221,397-310,671

Finding the Third Proportional to 221,397 and 310,671

Calculator

Solution

The third proportional to 221,397 and 310,671 is: 435,942.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,397 : 310,671 = 310,671 : x
  2. Step 2: Convert to fraction form
    221,397/310,671 = 310,671/x
  3. Step 3: Cross multiply
    221,397x = 310,671 × 310,671
  4. Step 4: Simplify right side
    221,397x = 96,516,470,241
  5. Step 5: Solve for x
    x = 96,516,470,241/221,397
  6. Step 6: Final answer
    x = 435,942.99

Related Problems

Find third proportional to 110,698.50 and 155,335.50
Half scale
Find third proportional to 442,794 and 621,342
Double scale
Find third proportional to 221,399 and 310,674
Similar ratio
Find third proportional to 332,095.50 and 466,006.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.