Home / 138,240-301,512

Finding the Third Proportional to 138,240 and 301,512

Calculator

Solution

The third proportional to 138,240 and 301,512 is: 657,620.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,240 : 301,512 = 301,512 : x
  2. Step 2: Convert to fraction form
    138,240/301,512 = 301,512/x
  3. Step 3: Cross multiply
    138,240x = 301,512 × 301,512
  4. Step 4: Simplify right side
    138,240x = 90,909,486,144
  5. Step 5: Solve for x
    x = 90,909,486,144/138,240
  6. Step 6: Final answer
    x = 657,620.70

Related Problems

Find third proportional to 69,120 and 150,756
Half scale
Find third proportional to 276,480 and 603,024
Double scale
Find third proportional to 138,242 and 301,516
Similar ratio
Find third proportional to 207,360 and 452,268
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.