Home / 148,329-328,689

Finding the Third Proportional to 148,329 and 328,689

Calculator

Solution

The third proportional to 148,329 and 328,689 is: 728,356.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,329 : 328,689 = 328,689 : x
  2. Step 2: Convert to fraction form
    148,329/328,689 = 328,689/x
  3. Step 3: Cross multiply
    148,329x = 328,689 × 328,689
  4. Step 4: Simplify right side
    148,329x = 108,036,458,721
  5. Step 5: Solve for x
    x = 108,036,458,721/148,329
  6. Step 6: Final answer
    x = 728,356.95

Related Problems

Find third proportional to 74,164.50 and 164,344.50
Half scale
Find third proportional to 296,658 and 657,378
Double scale
Find third proportional to 148,331 and 328,693
Similar ratio
Find third proportional to 222,493.50 and 493,033.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.