Home / 211,612-287,071

Finding the Third Proportional to 211,612 and 287,071

Calculator

Solution

The third proportional to 211,612 and 287,071 is: 389,438.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,612 : 287,071 = 287,071 : x
  2. Step 2: Convert to fraction form
    211,612/287,071 = 287,071/x
  3. Step 3: Cross multiply
    211,612x = 287,071 × 287,071
  4. Step 4: Simplify right side
    211,612x = 82,409,759,041
  5. Step 5: Solve for x
    x = 82,409,759,041/211,612
  6. Step 6: Final answer
    x = 389,438.02

Related Problems

Find third proportional to 105,806 and 143,535.50
Half scale
Find third proportional to 423,224 and 574,142
Double scale
Find third proportional to 211,614 and 287,074
Similar ratio
Find third proportional to 317,418 and 430,606.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.