Home / 201,069-312,628

Finding the Third Proportional to 201,069 and 312,628

Calculator

Solution

The third proportional to 201,069 and 312,628 is: 486,083.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,069 : 312,628 = 312,628 : x
  2. Step 2: Convert to fraction form
    201,069/312,628 = 312,628/x
  3. Step 3: Cross multiply
    201,069x = 312,628 × 312,628
  4. Step 4: Simplify right side
    201,069x = 97,736,266,384
  5. Step 5: Solve for x
    x = 97,736,266,384/201,069
  6. Step 6: Final answer
    x = 486,083.22

Related Problems

Find third proportional to 100,534.50 and 156,314
Half scale
Find third proportional to 402,138 and 625,256
Double scale
Find third proportional to 201,071 and 312,631
Similar ratio
Find third proportional to 301,603.50 and 468,942
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.