Home / 212,918-319,383

Finding the Third Proportional to 212,918 and 319,383

Calculator

Solution

The third proportional to 212,918 and 319,383 is: 479,083.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,918 : 319,383 = 319,383 : x
  2. Step 2: Convert to fraction form
    212,918/319,383 = 319,383/x
  3. Step 3: Cross multiply
    212,918x = 319,383 × 319,383
  4. Step 4: Simplify right side
    212,918x = 102,005,500,689
  5. Step 5: Solve for x
    x = 102,005,500,689/212,918
  6. Step 6: Final answer
    x = 479,083.50

Related Problems

Find third proportional to 106,459 and 159,691.50
Half scale
Find third proportional to 425,836 and 638,766
Double scale
Find third proportional to 212,920 and 319,386
Similar ratio
Find third proportional to 319,377 and 479,074.50
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.