Home / 211,698-300,915

Finding the Third Proportional to 211,698 and 300,915

Calculator

Solution

The third proportional to 211,698 and 300,915 is: 427,731.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,698 : 300,915 = 300,915 : x
  2. Step 2: Convert to fraction form
    211,698/300,915 = 300,915/x
  3. Step 3: Cross multiply
    211,698x = 300,915 × 300,915
  4. Step 4: Simplify right side
    211,698x = 90,549,837,225
  5. Step 5: Solve for x
    x = 90,549,837,225/211,698
  6. Step 6: Final answer
    x = 427,731.19

Related Problems

Find third proportional to 105,849 and 150,457.50
Half scale
Find third proportional to 423,396 and 601,830
Double scale
Find third proportional to 211,700 and 300,918
Similar ratio
Find third proportional to 317,547 and 451,372.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.