Home / 198,873-288,918

Finding the Third Proportional to 198,873 and 288,918

Calculator

Solution

The third proportional to 198,873 and 288,918 is: 419,733.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,873 : 288,918 = 288,918 : x
  2. Step 2: Convert to fraction form
    198,873/288,918 = 288,918/x
  3. Step 3: Cross multiply
    198,873x = 288,918 × 288,918
  4. Step 4: Simplify right side
    198,873x = 83,473,610,724
  5. Step 5: Solve for x
    x = 83,473,610,724/198,873
  6. Step 6: Final answer
    x = 419,733.25

Related Problems

Find third proportional to 99,436.50 and 144,459
Half scale
Find third proportional to 397,746 and 577,836
Double scale
Find third proportional to 198,875 and 288,921
Similar ratio
Find third proportional to 298,309.50 and 433,377
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.