Home / 130,800-291,208

Finding the Third Proportional to 130,800 and 291,208

Calculator

Solution

The third proportional to 130,800 and 291,208 is: 648,334.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,800 : 291,208 = 291,208 : x
  2. Step 2: Convert to fraction form
    130,800/291,208 = 291,208/x
  3. Step 3: Cross multiply
    130,800x = 291,208 × 291,208
  4. Step 4: Simplify right side
    130,800x = 84,802,099,264
  5. Step 5: Solve for x
    x = 84,802,099,264/130,800
  6. Step 6: Final answer
    x = 648,334.09

Related Problems

Find third proportional to 65,400 and 145,604
Half scale
Find third proportional to 261,600 and 582,416
Double scale
Find third proportional to 130,802 and 291,212
Similar ratio
Find third proportional to 196,200 and 436,812
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.