Home / 142,900-310,396

Finding the Third Proportional to 142,900 and 310,396

Calculator

Solution

The third proportional to 142,900 and 310,396 is: 674,217.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,900 : 310,396 = 310,396 : x
  2. Step 2: Convert to fraction form
    142,900/310,396 = 310,396/x
  3. Step 3: Cross multiply
    142,900x = 310,396 × 310,396
  4. Step 4: Simplify right side
    142,900x = 96,345,676,816
  5. Step 5: Solve for x
    x = 96,345,676,816/142,900
  6. Step 6: Final answer
    x = 674,217.47

Related Problems

Find third proportional to 71,450 and 155,198
Half scale
Find third proportional to 285,800 and 620,792
Double scale
Find third proportional to 142,902 and 310,400
Similar ratio
Find third proportional to 214,350 and 465,594
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.