Home / 209,657-279,330

Finding the Third Proportional to 209,657 and 279,330

Calculator

Solution

The third proportional to 209,657 and 279,330 is: 372,156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,657 : 279,330 = 279,330 : x
  2. Step 2: Convert to fraction form
    209,657/279,330 = 279,330/x
  3. Step 3: Cross multiply
    209,657x = 279,330 × 279,330
  4. Step 4: Simplify right side
    209,657x = 78,025,248,900
  5. Step 5: Solve for x
    x = 78,025,248,900/209,657
  6. Step 6: Final answer
    x = 372,156.66

Related Problems

Find third proportional to 104,828.50 and 139,665
Half scale
Find third proportional to 419,314 and 558,660
Double scale
Find third proportional to 209,659 and 279,333
Similar ratio
Find third proportional to 314,485.50 and 418,995
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.