Home / 133,710-207,315

Finding the Third Proportional to 133,710 and 207,315

Calculator

Solution

The third proportional to 133,710 and 207,315 is: 321,438.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,710 : 207,315 = 207,315 : x
  2. Step 2: Convert to fraction form
    133,710/207,315 = 207,315/x
  3. Step 3: Cross multiply
    133,710x = 207,315 × 207,315
  4. Step 4: Simplify right side
    133,710x = 42,979,509,225
  5. Step 5: Solve for x
    x = 42,979,509,225/133,710
  6. Step 6: Final answer
    x = 321,438.26

Related Problems

Find third proportional to 66,855 and 103,657.50
Half scale
Find third proportional to 267,420 and 414,630
Double scale
Find third proportional to 133,712 and 207,318
Similar ratio
Find third proportional to 200,565 and 310,972.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.