Home / 139,608-310,176

Finding the Third Proportional to 139,608 and 310,176

Calculator

Solution

The third proportional to 139,608 and 310,176 is: 689,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,608 : 310,176 = 310,176 : x
  2. Step 2: Convert to fraction form
    139,608/310,176 = 310,176/x
  3. Step 3: Cross multiply
    139,608x = 310,176 × 310,176
  4. Step 4: Simplify right side
    139,608x = 96,209,150,976
  5. Step 5: Solve for x
    x = 96,209,150,976/139,608
  6. Step 6: Final answer
    x = 689,137.81

Related Problems

Find third proportional to 69,804 and 155,088
Half scale
Find third proportional to 279,216 and 620,352
Double scale
Find third proportional to 139,610 and 310,180
Similar ratio
Find third proportional to 209,412 and 465,264
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.