Home / 128,740-269,244

Finding the Third Proportional to 128,740 and 269,244

Calculator

Solution

The third proportional to 128,740 and 269,244 is: 563,090.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,740 : 269,244 = 269,244 : x
  2. Step 2: Convert to fraction form
    128,740/269,244 = 269,244/x
  3. Step 3: Cross multiply
    128,740x = 269,244 × 269,244
  4. Step 4: Simplify right side
    128,740x = 72,492,331,536
  5. Step 5: Solve for x
    x = 72,492,331,536/128,740
  6. Step 6: Final answer
    x = 563,090.97

Related Problems

Find third proportional to 64,370 and 134,622
Half scale
Find third proportional to 257,480 and 538,488
Double scale
Find third proportional to 128,742 and 269,248
Similar ratio
Find third proportional to 193,110 and 403,866
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.