Home / 137,956-256,220

Finding the Third Proportional to 137,956 and 256,220

Calculator

Solution

The third proportional to 137,956 and 256,220 is: 475,866.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,956 : 256,220 = 256,220 : x
  2. Step 2: Convert to fraction form
    137,956/256,220 = 256,220/x
  3. Step 3: Cross multiply
    137,956x = 256,220 × 256,220
  4. Step 4: Simplify right side
    137,956x = 65,648,688,400
  5. Step 5: Solve for x
    x = 65,648,688,400/137,956
  6. Step 6: Final answer
    x = 475,866.86

Related Problems

Find third proportional to 68,978 and 128,110
Half scale
Find third proportional to 275,912 and 512,440
Double scale
Find third proportional to 137,958 and 256,224
Similar ratio
Find third proportional to 206,934 and 384,330
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.