Home / 138,444-210,402

Finding the Third Proportional to 138,444 and 210,402

Calculator

Solution

The third proportional to 138,444 and 210,402 is: 319,761.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,444 : 210,402 = 210,402 : x
  2. Step 2: Convert to fraction form
    138,444/210,402 = 210,402/x
  3. Step 3: Cross multiply
    138,444x = 210,402 × 210,402
  4. Step 4: Simplify right side
    138,444x = 44,269,001,604
  5. Step 5: Solve for x
    x = 44,269,001,604/138,444
  6. Step 6: Final answer
    x = 319,761.07

Related Problems

Find third proportional to 69,222 and 105,201
Half scale
Find third proportional to 276,888 and 420,804
Double scale
Find third proportional to 138,446 and 210,405
Similar ratio
Find third proportional to 207,666 and 315,603
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.