Home / 155,399-343,471

Finding the Third Proportional to 155,399 and 343,471

Calculator

Solution

The third proportional to 155,399 and 343,471 is: 759,157.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,399 : 343,471 = 343,471 : x
  2. Step 2: Convert to fraction form
    155,399/343,471 = 343,471/x
  3. Step 3: Cross multiply
    155,399x = 343,471 × 343,471
  4. Step 4: Simplify right side
    155,399x = 117,972,327,841
  5. Step 5: Solve for x
    x = 117,972,327,841/155,399
  6. Step 6: Final answer
    x = 759,157.57

Related Problems

Find third proportional to 77,699.50 and 171,735.50
Half scale
Find third proportional to 310,798 and 686,942
Double scale
Find third proportional to 155,401 and 343,475
Similar ratio
Find third proportional to 233,098.50 and 515,206.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.