Home / 215,815-338,551

Finding the Third Proportional to 215,815 and 338,551

Calculator

Solution

The third proportional to 215,815 and 338,551 is: 531,088.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,815 : 338,551 = 338,551 : x
  2. Step 2: Convert to fraction form
    215,815/338,551 = 338,551/x
  3. Step 3: Cross multiply
    215,815x = 338,551 × 338,551
  4. Step 4: Simplify right side
    215,815x = 114,616,779,601
  5. Step 5: Solve for x
    x = 114,616,779,601/215,815
  6. Step 6: Final answer
    x = 531,088.11

Related Problems

Find third proportional to 107,907.50 and 169,275.50
Half scale
Find third proportional to 431,630 and 677,102
Double scale
Find third proportional to 215,817 and 338,554
Similar ratio
Find third proportional to 323,722.50 and 507,826.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.