Home / 279,712-430,187

Finding the Third Proportional to 279,712 and 430,187

Calculator

Solution

The third proportional to 279,712 and 430,187 is: 661,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,712 : 430,187 = 430,187 : x
  2. Step 2: Convert to fraction form
    279,712/430,187 = 430,187/x
  3. Step 3: Cross multiply
    279,712x = 430,187 × 430,187
  4. Step 4: Simplify right side
    279,712x = 185,060,854,969
  5. Step 5: Solve for x
    x = 185,060,854,969/279,712
  6. Step 6: Final answer
    x = 661,612.14

Related Problems

Find third proportional to 139,856 and 215,093.50
Half scale
Find third proportional to 559,424 and 860,374
Double scale
Find third proportional to 279,714 and 430,190
Similar ratio
Find third proportional to 419,568 and 645,280.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.