Home / 120,382-256,318

Finding the Third Proportional to 120,382 and 256,318

Calculator

Solution

The third proportional to 120,382 and 256,318 is: 545,753.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,382 : 256,318 = 256,318 : x
  2. Step 2: Convert to fraction form
    120,382/256,318 = 256,318/x
  3. Step 3: Cross multiply
    120,382x = 256,318 × 256,318
  4. Step 4: Simplify right side
    120,382x = 65,698,917,124
  5. Step 5: Solve for x
    x = 65,698,917,124/120,382
  6. Step 6: Final answer
    x = 545,753.66

Related Problems

Find third proportional to 60,191 and 128,159
Half scale
Find third proportional to 240,764 and 512,636
Double scale
Find third proportional to 120,384 and 256,322
Similar ratio
Find third proportional to 180,573 and 384,477
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.