Home / 163,869-221,400

Finding the Third Proportional to 163,869 and 221,400

Calculator

Solution

The third proportional to 163,869 and 221,400 is: 299,128.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,869 : 221,400 = 221,400 : x
  2. Step 2: Convert to fraction form
    163,869/221,400 = 221,400/x
  3. Step 3: Cross multiply
    163,869x = 221,400 × 221,400
  4. Step 4: Simplify right side
    163,869x = 49,017,960,000
  5. Step 5: Solve for x
    x = 49,017,960,000/163,869
  6. Step 6: Final answer
    x = 299,128.94

Related Problems

Find third proportional to 81,934.50 and 110,700
Half scale
Find third proportional to 327,738 and 442,800
Double scale
Find third proportional to 163,871 and 221,403
Similar ratio
Find third proportional to 245,803.50 and 332,100
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.