Home / 190,614-280,215

Finding the Third Proportional to 190,614 and 280,215

Calculator

Solution

The third proportional to 190,614 and 280,215 is: 411,934.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,614 : 280,215 = 280,215 : x
  2. Step 2: Convert to fraction form
    190,614/280,215 = 280,215/x
  3. Step 3: Cross multiply
    190,614x = 280,215 × 280,215
  4. Step 4: Simplify right side
    190,614x = 78,520,446,225
  5. Step 5: Solve for x
    x = 78,520,446,225/190,614
  6. Step 6: Final answer
    x = 411,934.31

Related Problems

Find third proportional to 95,307 and 140,107.50
Half scale
Find third proportional to 381,228 and 560,430
Double scale
Find third proportional to 190,616 and 280,218
Similar ratio
Find third proportional to 285,921 and 420,322.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.