Home / 142,724-310,874

Finding the Third Proportional to 142,724 and 310,874

Calculator

Solution

The third proportional to 142,724 and 310,874 is: 677,129.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,724 : 310,874 = 310,874 : x
  2. Step 2: Convert to fraction form
    142,724/310,874 = 310,874/x
  3. Step 3: Cross multiply
    142,724x = 310,874 × 310,874
  4. Step 4: Simplify right side
    142,724x = 96,642,643,876
  5. Step 5: Solve for x
    x = 96,642,643,876/142,724
  6. Step 6: Final answer
    x = 677,129.59

Related Problems

Find third proportional to 71,362 and 155,437
Half scale
Find third proportional to 285,448 and 621,748
Double scale
Find third proportional to 142,726 and 310,878
Similar ratio
Find third proportional to 214,086 and 466,311
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.