Home / 218,711-342,647

Finding the Third Proportional to 218,711 and 342,647

Calculator

Solution

The third proportional to 218,711 and 342,647 is: 536,813.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,711 : 342,647 = 342,647 : x
  2. Step 2: Convert to fraction form
    218,711/342,647 = 342,647/x
  3. Step 3: Cross multiply
    218,711x = 342,647 × 342,647
  4. Step 4: Simplify right side
    218,711x = 117,406,966,609
  5. Step 5: Solve for x
    x = 117,406,966,609/218,711
  6. Step 6: Final answer
    x = 536,813.27

Related Problems

Find third proportional to 109,355.50 and 171,323.50
Half scale
Find third proportional to 437,422 and 685,294
Double scale
Find third proportional to 218,713 and 342,650
Similar ratio
Find third proportional to 328,066.50 and 513,970.50
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.