Home / 172,480-257,655

Finding the Third Proportional to 172,480 and 257,655

Calculator

Solution

The third proportional to 172,480 and 257,655 is: 384,891.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,480 : 257,655 = 257,655 : x
  2. Step 2: Convert to fraction form
    172,480/257,655 = 257,655/x
  3. Step 3: Cross multiply
    172,480x = 257,655 × 257,655
  4. Step 4: Simplify right side
    172,480x = 66,386,099,025
  5. Step 5: Solve for x
    x = 66,386,099,025/172,480
  6. Step 6: Final answer
    x = 384,891.58

Related Problems

Find third proportional to 86,240 and 128,827.50
Half scale
Find third proportional to 344,960 and 515,310
Double scale
Find third proportional to 172,482 and 257,658
Similar ratio
Find third proportional to 258,720 and 386,482.50
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.