Home / 257,910-394,497

Finding the Third Proportional to 257,910 and 394,497

Calculator

Solution

The third proportional to 257,910 and 394,497 is: 603,419.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,910 : 394,497 = 394,497 : x
  2. Step 2: Convert to fraction form
    257,910/394,497 = 394,497/x
  3. Step 3: Cross multiply
    257,910x = 394,497 × 394,497
  4. Step 4: Simplify right side
    257,910x = 155,627,883,009
  5. Step 5: Solve for x
    x = 155,627,883,009/257,910
  6. Step 6: Final answer
    x = 603,419.34

Related Problems

Find third proportional to 128,955 and 197,248.50
Half scale
Find third proportional to 515,820 and 788,994
Double scale
Find third proportional to 257,912 and 394,500
Similar ratio
Find third proportional to 386,865 and 591,745.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.