Home / 143,210-313,636

Finding the Third Proportional to 143,210 and 313,636

Calculator

Solution

The third proportional to 143,210 and 313,636 is: 686,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,210 : 313,636 = 313,636 : x
  2. Step 2: Convert to fraction form
    143,210/313,636 = 313,636/x
  3. Step 3: Cross multiply
    143,210x = 313,636 × 313,636
  4. Step 4: Simplify right side
    143,210x = 98,367,540,496
  5. Step 5: Solve for x
    x = 98,367,540,496/143,210
  6. Step 6: Final answer
    x = 686,876.20

Related Problems

Find third proportional to 71,605 and 156,818
Half scale
Find third proportional to 286,420 and 627,272
Double scale
Find third proportional to 143,212 and 313,640
Similar ratio
Find third proportional to 214,815 and 470,454
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.