Home / 155,539-317,639

Finding the Third Proportional to 155,539 and 317,639

Calculator

Solution

The third proportional to 155,539 and 317,639 is: 648,676.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,539 : 317,639 = 317,639 : x
  2. Step 2: Convert to fraction form
    155,539/317,639 = 317,639/x
  3. Step 3: Cross multiply
    155,539x = 317,639 × 317,639
  4. Step 4: Simplify right side
    155,539x = 100,894,534,321
  5. Step 5: Solve for x
    x = 100,894,534,321/155,539
  6. Step 6: Final answer
    x = 648,676.76

Related Problems

Find third proportional to 77,769.50 and 158,819.50
Half scale
Find third proportional to 311,078 and 635,278
Double scale
Find third proportional to 155,541 and 317,643
Similar ratio
Find third proportional to 233,308.50 and 476,458.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.