Home / 140,321-307,811

Finding the Third Proportional to 140,321 and 307,811

Calculator

Solution

The third proportional to 140,321 and 307,811 is: 675,220.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,321 : 307,811 = 307,811 : x
  2. Step 2: Convert to fraction form
    140,321/307,811 = 307,811/x
  3. Step 3: Cross multiply
    140,321x = 307,811 × 307,811
  4. Step 4: Simplify right side
    140,321x = 94,747,611,721
  5. Step 5: Solve for x
    x = 94,747,611,721/140,321
  6. Step 6: Final answer
    x = 675,220.47

Related Problems

Find third proportional to 70,160.50 and 153,905.50
Half scale
Find third proportional to 280,642 and 615,622
Double scale
Find third proportional to 140,323 and 307,815
Similar ratio
Find third proportional to 210,481.50 and 461,716.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.