Home / 138,852-298,800

Finding the Third Proportional to 138,852 and 298,800

Calculator

Solution

The third proportional to 138,852 and 298,800 is: 642,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,852 : 298,800 = 298,800 : x
  2. Step 2: Convert to fraction form
    138,852/298,800 = 298,800/x
  3. Step 3: Cross multiply
    138,852x = 298,800 × 298,800
  4. Step 4: Simplify right side
    138,852x = 89,281,440,000
  5. Step 5: Solve for x
    x = 89,281,440,000/138,852
  6. Step 6: Final answer
    x = 642,997.15

Related Problems

Find third proportional to 69,426 and 149,400
Half scale
Find third proportional to 277,704 and 597,600
Double scale
Find third proportional to 138,854 and 298,804
Similar ratio
Find third proportional to 208,278 and 448,200
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.