Home / 138,469-297,998

Finding the Third Proportional to 138,469 and 297,998

Calculator

Solution

The third proportional to 138,469 and 297,998 is: 641,319.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,469 : 297,998 = 297,998 : x
  2. Step 2: Convert to fraction form
    138,469/297,998 = 297,998/x
  3. Step 3: Cross multiply
    138,469x = 297,998 × 297,998
  4. Step 4: Simplify right side
    138,469x = 88,802,808,004
  5. Step 5: Solve for x
    x = 88,802,808,004/138,469
  6. Step 6: Final answer
    x = 641,319.05

Related Problems

Find third proportional to 69,234.50 and 148,999
Half scale
Find third proportional to 276,938 and 595,996
Double scale
Find third proportional to 138,471 and 298,002
Similar ratio
Find third proportional to 207,703.50 and 446,997
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.