Home / 128,469-270,783

Finding the Third Proportional to 128,469 and 270,783

Calculator

Solution

The third proportional to 128,469 and 270,783 is: 570,748.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,469 : 270,783 = 270,783 : x
  2. Step 2: Convert to fraction form
    128,469/270,783 = 270,783/x
  3. Step 3: Cross multiply
    128,469x = 270,783 × 270,783
  4. Step 4: Simplify right side
    128,469x = 73,323,433,089
  5. Step 5: Solve for x
    x = 73,323,433,089/128,469
  6. Step 6: Final answer
    x = 570,748.06

Related Problems

Find third proportional to 64,234.50 and 135,391.50
Half scale
Find third proportional to 256,938 and 541,566
Double scale
Find third proportional to 128,471 and 270,787
Similar ratio
Find third proportional to 192,703.50 and 406,174.50
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.