Home / 119,869-258,419

Finding the Third Proportional to 119,869 and 258,419

Calculator

Solution

The third proportional to 119,869 and 258,419 is: 557,111.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,869 : 258,419 = 258,419 : x
  2. Step 2: Convert to fraction form
    119,869/258,419 = 258,419/x
  3. Step 3: Cross multiply
    119,869x = 258,419 × 258,419
  4. Step 4: Simplify right side
    119,869x = 66,780,379,561
  5. Step 5: Solve for x
    x = 66,780,379,561/119,869
  6. Step 6: Final answer
    x = 557,111.34

Related Problems

Find third proportional to 59,934.50 and 129,209.50
Half scale
Find third proportional to 239,738 and 516,838
Double scale
Find third proportional to 119,871 and 258,423
Similar ratio
Find third proportional to 179,803.50 and 387,628.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.