Home / 100,859-217,279

Finding the Third Proportional to 100,859 and 217,279

Calculator

Solution

The third proportional to 100,859 and 217,279 is: 468,080.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,859 : 217,279 = 217,279 : x
  2. Step 2: Convert to fraction form
    100,859/217,279 = 217,279/x
  3. Step 3: Cross multiply
    100,859x = 217,279 × 217,279
  4. Step 4: Simplify right side
    100,859x = 47,210,163,841
  5. Step 5: Solve for x
    x = 47,210,163,841/100,859
  6. Step 6: Final answer
    x = 468,080.82

Related Problems

Find third proportional to 50,429.50 and 108,639.50
Half scale
Find third proportional to 201,718 and 434,558
Double scale
Find third proportional to 100,861 and 217,283
Similar ratio
Find third proportional to 151,288.50 and 325,918.50
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.