Home / 129,740-276,220

Finding the Third Proportional to 129,740 and 276,220

Calculator

Solution

The third proportional to 129,740 and 276,220 is: 588,079.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,740 : 276,220 = 276,220 : x
  2. Step 2: Convert to fraction form
    129,740/276,220 = 276,220/x
  3. Step 3: Cross multiply
    129,740x = 276,220 × 276,220
  4. Step 4: Simplify right side
    129,740x = 76,297,488,400
  5. Step 5: Solve for x
    x = 76,297,488,400/129,740
  6. Step 6: Final answer
    x = 588,079.92

Related Problems

Find third proportional to 64,870 and 138,110
Half scale
Find third proportional to 259,480 and 552,440
Double scale
Find third proportional to 129,742 and 276,224
Similar ratio
Find third proportional to 194,610 and 414,330
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.