Home / 181,758-278,991

Finding the Third Proportional to 181,758 and 278,991

Calculator

Solution

The third proportional to 181,758 and 278,991 is: 428,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,758 : 278,991 = 278,991 : x
  2. Step 2: Convert to fraction form
    181,758/278,991 = 278,991/x
  3. Step 3: Cross multiply
    181,758x = 278,991 × 278,991
  4. Step 4: Simplify right side
    181,758x = 77,835,978,081
  5. Step 5: Solve for x
    x = 77,835,978,081/181,758
  6. Step 6: Final answer
    x = 428,239.63

Related Problems

Find third proportional to 90,879 and 139,495.50
Half scale
Find third proportional to 363,516 and 557,982
Double scale
Find third proportional to 181,760 and 278,994
Similar ratio
Find third proportional to 272,637 and 418,486.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.