Home / 129,704-279,421

Finding the Third Proportional to 129,704 and 279,421

Calculator

Solution

The third proportional to 129,704 and 279,421 is: 601,955.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,704 : 279,421 = 279,421 : x
  2. Step 2: Convert to fraction form
    129,704/279,421 = 279,421/x
  3. Step 3: Cross multiply
    129,704x = 279,421 × 279,421
  4. Step 4: Simplify right side
    129,704x = 78,076,095,241
  5. Step 5: Solve for x
    x = 78,076,095,241/129,704
  6. Step 6: Final answer
    x = 601,955.96

Related Problems

Find third proportional to 64,852 and 139,710.50
Half scale
Find third proportional to 259,408 and 558,842
Double scale
Find third proportional to 129,706 and 279,425
Similar ratio
Find third proportional to 194,556 and 419,131.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.