Home / 156,393-318,312

Finding the Third Proportional to 156,393 and 318,312

Calculator

Solution

The third proportional to 156,393 and 318,312 is: 647,871.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,393 : 318,312 = 318,312 : x
  2. Step 2: Convert to fraction form
    156,393/318,312 = 318,312/x
  3. Step 3: Cross multiply
    156,393x = 318,312 × 318,312
  4. Step 4: Simplify right side
    156,393x = 101,322,529,344
  5. Step 5: Solve for x
    x = 101,322,529,344/156,393
  6. Step 6: Final answer
    x = 647,871.26

Related Problems

Find third proportional to 78,196.50 and 159,156
Half scale
Find third proportional to 312,786 and 636,624
Double scale
Find third proportional to 156,395 and 318,316
Similar ratio
Find third proportional to 234,589.50 and 477,468
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.