Home / 170,490-258,099

Finding the Third Proportional to 170,490 and 258,099

Calculator

Solution

The third proportional to 170,490 and 258,099 is: 390,727.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,490 : 258,099 = 258,099 : x
  2. Step 2: Convert to fraction form
    170,490/258,099 = 258,099/x
  3. Step 3: Cross multiply
    170,490x = 258,099 × 258,099
  4. Step 4: Simplify right side
    170,490x = 66,615,093,801
  5. Step 5: Solve for x
    x = 66,615,093,801/170,490
  6. Step 6: Final answer
    x = 390,727.28

Related Problems

Find third proportional to 85,245 and 129,049.50
Half scale
Find third proportional to 340,980 and 516,198
Double scale
Find third proportional to 170,492 and 258,102
Similar ratio
Find third proportional to 255,735 and 387,148.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.