Home / 69,474-149,480

Finding the Third Proportional to 69,474 and 149,480

Calculator

Solution

The third proportional to 69,474 and 149,480 is: 321,620.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,474 : 149,480 = 149,480 : x
  2. Step 2: Convert to fraction form
    69,474/149,480 = 149,480/x
  3. Step 3: Cross multiply
    69,474x = 149,480 × 149,480
  4. Step 4: Simplify right side
    69,474x = 22,344,270,400
  5. Step 5: Solve for x
    x = 22,344,270,400/69,474
  6. Step 6: Final answer
    x = 321,620.61

Related Problems

Find third proportional to 34,737 and 74,740
Half scale
Find third proportional to 138,948 and 298,960
Double scale
Find third proportional to 69,476 and 149,484
Similar ratio
Find third proportional to 104,211 and 224,220
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.