Home / 251,831-380,172

Finding the Third Proportional to 251,831 and 380,172

Calculator

Solution

The third proportional to 251,831 and 380,172 is: 573,919.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,831 : 380,172 = 380,172 : x
  2. Step 2: Convert to fraction form
    251,831/380,172 = 380,172/x
  3. Step 3: Cross multiply
    251,831x = 380,172 × 380,172
  4. Step 4: Simplify right side
    251,831x = 144,530,749,584
  5. Step 5: Solve for x
    x = 144,530,749,584/251,831
  6. Step 6: Final answer
    x = 573,919.61

Related Problems

Find third proportional to 125,915.50 and 190,086
Half scale
Find third proportional to 503,662 and 760,344
Double scale
Find third proportional to 251,833 and 380,175
Similar ratio
Find third proportional to 377,746.50 and 570,258
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.