Home / 128,886-283,902

Finding the Third Proportional to 128,886 and 283,902

Calculator

Solution

The third proportional to 128,886 and 283,902 is: 625,361.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,886 : 283,902 = 283,902 : x
  2. Step 2: Convert to fraction form
    128,886/283,902 = 283,902/x
  3. Step 3: Cross multiply
    128,886x = 283,902 × 283,902
  4. Step 4: Simplify right side
    128,886x = 80,600,345,604
  5. Step 5: Solve for x
    x = 80,600,345,604/128,886
  6. Step 6: Final answer
    x = 625,361.53

Related Problems

Find third proportional to 64,443 and 141,951
Half scale
Find third proportional to 257,772 and 567,804
Double scale
Find third proportional to 128,888 and 283,906
Similar ratio
Find third proportional to 193,329 and 425,853
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.