Home / 216,529-311,904

Finding the Third Proportional to 216,529 and 311,904

Calculator

Solution

The third proportional to 216,529 and 311,904 is: 449,289.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,529 : 311,904 = 311,904 : x
  2. Step 2: Convert to fraction form
    216,529/311,904 = 311,904/x
  3. Step 3: Cross multiply
    216,529x = 311,904 × 311,904
  4. Step 4: Simplify right side
    216,529x = 97,284,105,216
  5. Step 5: Solve for x
    x = 97,284,105,216/216,529
  6. Step 6: Final answer
    x = 449,289.03

Related Problems

Find third proportional to 108,264.50 and 155,952
Half scale
Find third proportional to 433,058 and 623,808
Double scale
Find third proportional to 216,531 and 311,907
Similar ratio
Find third proportional to 324,793.50 and 467,856
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.