Home / 187,005-280,434

Finding the Third Proportional to 187,005 and 280,434

Calculator

Solution

The third proportional to 187,005 and 280,434 is: 420,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,005 : 280,434 = 280,434 : x
  2. Step 2: Convert to fraction form
    187,005/280,434 = 280,434/x
  3. Step 3: Cross multiply
    187,005x = 280,434 × 280,434
  4. Step 4: Simplify right side
    187,005x = 78,643,228,356
  5. Step 5: Solve for x
    x = 78,643,228,356/187,005
  6. Step 6: Final answer
    x = 420,540.78

Related Problems

Find third proportional to 93,502.50 and 140,217
Half scale
Find third proportional to 374,010 and 560,868
Double scale
Find third proportional to 187,007 and 280,437
Similar ratio
Find third proportional to 280,507.50 and 420,651
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.