Home / 207,318-311,139

Finding the Third Proportional to 207,318 and 311,139

Calculator

Solution

The third proportional to 207,318 and 311,139 is: 466,951.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,318 : 311,139 = 311,139 : x
  2. Step 2: Convert to fraction form
    207,318/311,139 = 311,139/x
  3. Step 3: Cross multiply
    207,318x = 311,139 × 311,139
  4. Step 4: Simplify right side
    207,318x = 96,807,477,321
  5. Step 5: Solve for x
    x = 96,807,477,321/207,318
  6. Step 6: Final answer
    x = 466,951.63

Related Problems

Find third proportional to 103,659 and 155,569.50
Half scale
Find third proportional to 414,636 and 622,278
Double scale
Find third proportional to 207,320 and 311,142
Similar ratio
Find third proportional to 310,977 and 466,708.50
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.