Home / 218,716-342,653

Finding the Third Proportional to 218,716 and 342,653

Calculator

Solution

The third proportional to 218,716 and 342,653 is: 536,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,716 : 342,653 = 342,653 : x
  2. Step 2: Convert to fraction form
    218,716/342,653 = 342,653/x
  3. Step 3: Cross multiply
    218,716x = 342,653 × 342,653
  4. Step 4: Simplify right side
    218,716x = 117,411,078,409
  5. Step 5: Solve for x
    x = 117,411,078,409/218,716
  6. Step 6: Final answer
    x = 536,819.80

Related Problems

Find third proportional to 109,358 and 171,326.50
Half scale
Find third proportional to 437,432 and 685,306
Double scale
Find third proportional to 218,718 and 342,656
Similar ratio
Find third proportional to 328,074 and 513,979.50
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.