Home / 172,428-256,180

Finding the Third Proportional to 172,428 and 256,180

Calculator

Solution

The third proportional to 172,428 and 256,180 is: 380,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,428 : 256,180 = 256,180 : x
  2. Step 2: Convert to fraction form
    172,428/256,180 = 256,180/x
  3. Step 3: Cross multiply
    172,428x = 256,180 × 256,180
  4. Step 4: Simplify right side
    172,428x = 65,628,192,400
  5. Step 5: Solve for x
    x = 65,628,192,400/172,428
  6. Step 6: Final answer
    x = 380,612.15

Related Problems

Find third proportional to 86,214 and 128,090
Half scale
Find third proportional to 344,856 and 512,360
Double scale
Find third proportional to 172,430 and 256,183
Similar ratio
Find third proportional to 258,642 and 384,270
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.