Home / 99,318-212,856

Finding the Third Proportional to 99,318 and 212,856

Calculator

Solution

The third proportional to 99,318 and 212,856 is: 456,187.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,318 : 212,856 = 212,856 : x
  2. Step 2: Convert to fraction form
    99,318/212,856 = 212,856/x
  3. Step 3: Cross multiply
    99,318x = 212,856 × 212,856
  4. Step 4: Simplify right side
    99,318x = 45,307,676,736
  5. Step 5: Solve for x
    x = 45,307,676,736/99,318
  6. Step 6: Final answer
    x = 456,187.97

Related Problems

Find third proportional to 49,659 and 106,428
Half scale
Find third proportional to 198,636 and 425,712
Double scale
Find third proportional to 99,320 and 212,860
Similar ratio
Find third proportional to 148,977 and 319,284
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.