Home / 122,118-257,356

Finding the Third Proportional to 122,118 and 257,356

Calculator

Solution

The third proportional to 122,118 and 257,356 is: 542,361.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,118 : 257,356 = 257,356 : x
  2. Step 2: Convert to fraction form
    122,118/257,356 = 257,356/x
  3. Step 3: Cross multiply
    122,118x = 257,356 × 257,356
  4. Step 4: Simplify right side
    122,118x = 66,232,110,736
  5. Step 5: Solve for x
    x = 66,232,110,736/122,118
  6. Step 6: Final answer
    x = 542,361.57

Related Problems

Find third proportional to 61,059 and 128,678
Half scale
Find third proportional to 244,236 and 514,712
Double scale
Find third proportional to 122,120 and 257,360
Similar ratio
Find third proportional to 183,177 and 386,034
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.