Home / 129,812-279,013

Finding the Third Proportional to 129,812 and 279,013

Calculator

Solution

The third proportional to 129,812 and 279,013 is: 599,699.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,812 : 279,013 = 279,013 : x
  2. Step 2: Convert to fraction form
    129,812/279,013 = 279,013/x
  3. Step 3: Cross multiply
    129,812x = 279,013 × 279,013
  4. Step 4: Simplify right side
    129,812x = 77,848,254,169
  5. Step 5: Solve for x
    x = 77,848,254,169/129,812
  6. Step 6: Final answer
    x = 599,699.98

Related Problems

Find third proportional to 64,906 and 139,506.50
Half scale
Find third proportional to 259,624 and 558,026
Double scale
Find third proportional to 129,814 and 279,017
Similar ratio
Find third proportional to 194,718 and 418,519.50
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.