Home / 190,612-280,212

Finding the Third Proportional to 190,612 and 280,212

Calculator

Solution

The third proportional to 190,612 and 280,212 is: 411,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,612 : 280,212 = 280,212 : x
  2. Step 2: Convert to fraction form
    190,612/280,212 = 280,212/x
  3. Step 3: Cross multiply
    190,612x = 280,212 × 280,212
  4. Step 4: Simplify right side
    190,612x = 78,518,764,944
  5. Step 5: Solve for x
    x = 78,518,764,944/190,612
  6. Step 6: Final answer
    x = 411,929.81

Related Problems

Find third proportional to 95,306 and 140,106
Half scale
Find third proportional to 381,224 and 560,424
Double scale
Find third proportional to 190,614 and 280,215
Similar ratio
Find third proportional to 285,918 and 420,318
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.