Home / 122,890-258,896

Finding the Third Proportional to 122,890 and 258,896

Calculator

Solution

The third proportional to 122,890 and 258,896 is: 545,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,890 : 258,896 = 258,896 : x
  2. Step 2: Convert to fraction form
    122,890/258,896 = 258,896/x
  3. Step 3: Cross multiply
    122,890x = 258,896 × 258,896
  4. Step 4: Simplify right side
    122,890x = 67,027,138,816
  5. Step 5: Solve for x
    x = 67,027,138,816/122,890
  6. Step 6: Final answer
    x = 545,423.87

Related Problems

Find third proportional to 61,445 and 129,448
Half scale
Find third proportional to 245,780 and 517,792
Double scale
Find third proportional to 122,892 and 258,900
Similar ratio
Find third proportional to 184,335 and 388,344
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.