Home / 128,744-269,248

Finding the Third Proportional to 128,744 and 269,248

Calculator

Solution

The third proportional to 128,744 and 269,248 is: 563,090.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,744 : 269,248 = 269,248 : x
  2. Step 2: Convert to fraction form
    128,744/269,248 = 269,248/x
  3. Step 3: Cross multiply
    128,744x = 269,248 × 269,248
  4. Step 4: Simplify right side
    128,744x = 72,494,485,504
  5. Step 5: Solve for x
    x = 72,494,485,504/128,744
  6. Step 6: Final answer
    x = 563,090.21

Related Problems

Find third proportional to 64,372 and 134,624
Half scale
Find third proportional to 257,488 and 538,496
Double scale
Find third proportional to 128,746 and 269,252
Similar ratio
Find third proportional to 193,116 and 403,872
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.