Home / 103,215-217,638

Finding the Third Proportional to 103,215 and 217,638

Calculator

Solution

The third proportional to 103,215 and 217,638 is: 458,909.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,215 : 217,638 = 217,638 : x
  2. Step 2: Convert to fraction form
    103,215/217,638 = 217,638/x
  3. Step 3: Cross multiply
    103,215x = 217,638 × 217,638
  4. Step 4: Simplify right side
    103,215x = 47,366,299,044
  5. Step 5: Solve for x
    x = 47,366,299,044/103,215
  6. Step 6: Final answer
    x = 458,909.06

Related Problems

Find third proportional to 51,607.50 and 108,819
Half scale
Find third proportional to 206,430 and 435,276
Double scale
Find third proportional to 103,217 and 217,642
Similar ratio
Find third proportional to 154,822.50 and 326,457
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.