Home / 289,888-422,236

Finding the Third Proportional to 289,888 and 422,236

Calculator

Solution

The third proportional to 289,888 and 422,236 is: 615,007.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,888 : 422,236 = 422,236 : x
  2. Step 2: Convert to fraction form
    289,888/422,236 = 422,236/x
  3. Step 3: Cross multiply
    289,888x = 422,236 × 422,236
  4. Step 4: Simplify right side
    289,888x = 178,283,239,696
  5. Step 5: Solve for x
    x = 178,283,239,696/289,888
  6. Step 6: Final answer
    x = 615,007.31

Related Problems

Find third proportional to 144,944 and 211,118
Half scale
Find third proportional to 579,776 and 844,472
Double scale
Find third proportional to 289,890 and 422,239
Similar ratio
Find third proportional to 434,832 and 633,354
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.