Home / 276,203-426,515

Finding the Third Proportional to 276,203 and 426,515

Calculator

Solution

The third proportional to 276,203 and 426,515 is: 658,628.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,203 : 426,515 = 426,515 : x
  2. Step 2: Convert to fraction form
    276,203/426,515 = 426,515/x
  3. Step 3: Cross multiply
    276,203x = 426,515 × 426,515
  4. Step 4: Simplify right side
    276,203x = 181,915,045,225
  5. Step 5: Solve for x
    x = 181,915,045,225/276,203
  6. Step 6: Final answer
    x = 658,628.06

Related Problems

Find third proportional to 138,101.50 and 213,257.50
Half scale
Find third proportional to 552,406 and 853,030
Double scale
Find third proportional to 276,205 and 426,518
Similar ratio
Find third proportional to 414,304.50 and 639,772.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.