Home / 272,179-422,477

Finding the Third Proportional to 272,179 and 422,477

Calculator

Solution

The third proportional to 272,179 and 422,477 is: 655,769.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,179 : 422,477 = 422,477 : x
  2. Step 2: Convert to fraction form
    272,179/422,477 = 422,477/x
  3. Step 3: Cross multiply
    272,179x = 422,477 × 422,477
  4. Step 4: Simplify right side
    272,179x = 178,486,815,529
  5. Step 5: Solve for x
    x = 178,486,815,529/272,179
  6. Step 6: Final answer
    x = 655,769.97

Related Problems

Find third proportional to 136,089.50 and 211,238.50
Half scale
Find third proportional to 544,358 and 844,954
Double scale
Find third proportional to 272,181 and 422,480
Similar ratio
Find third proportional to 408,268.50 and 633,715.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.