Home / 128,798-271,580

Finding the Third Proportional to 128,798 and 271,580

Calculator

Solution

The third proportional to 128,798 and 271,580 is: 572,646.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,798 : 271,580 = 271,580 : x
  2. Step 2: Convert to fraction form
    128,798/271,580 = 271,580/x
  3. Step 3: Cross multiply
    128,798x = 271,580 × 271,580
  4. Step 4: Simplify right side
    128,798x = 73,755,696,400
  5. Step 5: Solve for x
    x = 73,755,696,400/128,798
  6. Step 6: Final answer
    x = 572,646.29

Related Problems

Find third proportional to 64,399 and 135,790
Half scale
Find third proportional to 257,596 and 543,160
Double scale
Find third proportional to 128,800 and 271,584
Similar ratio
Find third proportional to 193,197 and 407,370
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.