Home / 121,038-258,702

Finding the Third Proportional to 121,038 and 258,702

Calculator

Solution

The third proportional to 121,038 and 258,702 is: 552,939.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,038 : 258,702 = 258,702 : x
  2. Step 2: Convert to fraction form
    121,038/258,702 = 258,702/x
  3. Step 3: Cross multiply
    121,038x = 258,702 × 258,702
  4. Step 4: Simplify right side
    121,038x = 66,926,724,804
  5. Step 5: Solve for x
    x = 66,926,724,804/121,038
  6. Step 6: Final answer
    x = 552,939.78

Related Problems

Find third proportional to 60,519 and 129,351
Half scale
Find third proportional to 242,076 and 517,404
Double scale
Find third proportional to 121,040 and 258,706
Similar ratio
Find third proportional to 181,557 and 388,053
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.