Home / 148,917-318,612

Finding the Third Proportional to 148,917 and 318,612

Calculator

Solution

The third proportional to 148,917 and 318,612 is: 681,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,917 : 318,612 = 318,612 : x
  2. Step 2: Convert to fraction form
    148,917/318,612 = 318,612/x
  3. Step 3: Cross multiply
    148,917x = 318,612 × 318,612
  4. Step 4: Simplify right side
    148,917x = 101,513,606,544
  5. Step 5: Solve for x
    x = 101,513,606,544/148,917
  6. Step 6: Final answer
    x = 681,679.10

Related Problems

Find third proportional to 74,458.50 and 159,306
Half scale
Find third proportional to 297,834 and 637,224
Double scale
Find third proportional to 148,919 and 318,616
Similar ratio
Find third proportional to 223,375.50 and 477,918
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.