Home / 210,170-289,005

Finding the Third Proportional to 210,170 and 289,005

Calculator

Solution

The third proportional to 210,170 and 289,005 is: 397,411.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,170 : 289,005 = 289,005 : x
  2. Step 2: Convert to fraction form
    210,170/289,005 = 289,005/x
  3. Step 3: Cross multiply
    210,170x = 289,005 × 289,005
  4. Step 4: Simplify right side
    210,170x = 83,523,890,025
  5. Step 5: Solve for x
    x = 83,523,890,025/210,170
  6. Step 6: Final answer
    x = 397,411.10

Related Problems

Find third proportional to 105,085 and 144,502.50
Half scale
Find third proportional to 420,340 and 578,010
Double scale
Find third proportional to 210,172 and 289,008
Similar ratio
Find third proportional to 315,255 and 433,507.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.