Home / 280,155-419,242

Finding the Third Proportional to 280,155 and 419,242

Calculator

Solution

The third proportional to 280,155 and 419,242 is: 627,380.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,155 : 419,242 = 419,242 : x
  2. Step 2: Convert to fraction form
    280,155/419,242 = 419,242/x
  3. Step 3: Cross multiply
    280,155x = 419,242 × 419,242
  4. Step 4: Simplify right side
    280,155x = 175,763,854,564
  5. Step 5: Solve for x
    x = 175,763,854,564/280,155
  6. Step 6: Final answer
    x = 627,380.75

Related Problems

Find third proportional to 140,077.50 and 209,621
Half scale
Find third proportional to 560,310 and 838,484
Double scale
Find third proportional to 280,157 and 419,245
Similar ratio
Find third proportional to 420,232.50 and 628,863
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.