Home / 120,770-256,156

Finding the Third Proportional to 120,770 and 256,156

Calculator

Solution

The third proportional to 120,770 and 256,156 is: 543,312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,770 : 256,156 = 256,156 : x
  2. Step 2: Convert to fraction form
    120,770/256,156 = 256,156/x
  3. Step 3: Cross multiply
    120,770x = 256,156 × 256,156
  4. Step 4: Simplify right side
    120,770x = 65,615,896,336
  5. Step 5: Solve for x
    x = 65,615,896,336/120,770
  6. Step 6: Final answer
    x = 543,312.88

Related Problems

Find third proportional to 60,385 and 128,078
Half scale
Find third proportional to 241,540 and 512,312
Double scale
Find third proportional to 120,772 and 256,160
Similar ratio
Find third proportional to 181,155 and 384,234
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.