Home / 138,888-210,277

Finding the Third Proportional to 138,888 and 210,277

Calculator

Solution

The third proportional to 138,888 and 210,277 is: 318,360.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,888 : 210,277 = 210,277 : x
  2. Step 2: Convert to fraction form
    138,888/210,277 = 210,277/x
  3. Step 3: Cross multiply
    138,888x = 210,277 × 210,277
  4. Step 4: Simplify right side
    138,888x = 44,216,416,729
  5. Step 5: Solve for x
    x = 44,216,416,729/138,888
  6. Step 6: Final answer
    x = 318,360.24

Related Problems

Find third proportional to 69,444 and 105,138.50
Half scale
Find third proportional to 277,776 and 420,554
Double scale
Find third proportional to 138,890 and 210,280
Similar ratio
Find third proportional to 208,332 and 315,415.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.