Home / 128,913-277,574

Finding the Third Proportional to 128,913 and 277,574

Calculator

Solution

The third proportional to 128,913 and 277,574 is: 597,669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,913 : 277,574 = 277,574 : x
  2. Step 2: Convert to fraction form
    128,913/277,574 = 277,574/x
  3. Step 3: Cross multiply
    128,913x = 277,574 × 277,574
  4. Step 4: Simplify right side
    128,913x = 77,047,325,476
  5. Step 5: Solve for x
    x = 77,047,325,476/128,913
  6. Step 6: Final answer
    x = 597,669.17

Related Problems

Find third proportional to 64,456.50 and 138,787
Half scale
Find third proportional to 257,826 and 555,148
Double scale
Find third proportional to 128,915 and 277,578
Similar ratio
Find third proportional to 193,369.50 and 416,361
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.