Home / 155,447-321,951

Finding the Third Proportional to 155,447 and 321,951

Calculator

Solution

The third proportional to 155,447 and 321,951 is: 666,802.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,447 : 321,951 = 321,951 : x
  2. Step 2: Convert to fraction form
    155,447/321,951 = 321,951/x
  3. Step 3: Cross multiply
    155,447x = 321,951 × 321,951
  4. Step 4: Simplify right side
    155,447x = 103,652,446,401
  5. Step 5: Solve for x
    x = 103,652,446,401/155,447
  6. Step 6: Final answer
    x = 666,802.49

Related Problems

Find third proportional to 77,723.50 and 160,975.50
Half scale
Find third proportional to 310,894 and 643,902
Double scale
Find third proportional to 155,449 and 321,955
Similar ratio
Find third proportional to 233,170.50 and 482,926.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.