Home / 139,417-221,588

Finding the Third Proportional to 139,417 and 221,588

Calculator

Solution

The third proportional to 139,417 and 221,588 is: 352,189.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,417 : 221,588 = 221,588 : x
  2. Step 2: Convert to fraction form
    139,417/221,588 = 221,588/x
  3. Step 3: Cross multiply
    139,417x = 221,588 × 221,588
  4. Step 4: Simplify right side
    139,417x = 49,101,241,744
  5. Step 5: Solve for x
    x = 49,101,241,744/139,417
  6. Step 6: Final answer
    x = 352,189.77

Related Problems

Find third proportional to 69,708.50 and 110,794
Half scale
Find third proportional to 278,834 and 443,176
Double scale
Find third proportional to 139,419 and 221,591
Similar ratio
Find third proportional to 209,125.50 and 332,382
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.