Home / 129,886-279,836

Finding the Third Proportional to 129,886 and 279,836

Calculator

Solution

The third proportional to 129,886 and 279,836 is: 602,899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,886 : 279,836 = 279,836 : x
  2. Step 2: Convert to fraction form
    129,886/279,836 = 279,836/x
  3. Step 3: Cross multiply
    129,886x = 279,836 × 279,836
  4. Step 4: Simplify right side
    129,886x = 78,308,186,896
  5. Step 5: Solve for x
    x = 78,308,186,896/129,886
  6. Step 6: Final answer
    x = 602,899.36

Related Problems

Find third proportional to 64,943 and 139,918
Half scale
Find third proportional to 259,772 and 559,672
Double scale
Find third proportional to 129,888 and 279,840
Similar ratio
Find third proportional to 194,829 and 419,754
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.