Home / 145,408-218,841

Finding the Third Proportional to 145,408 and 218,841

Calculator

Solution

The third proportional to 145,408 and 218,841 is: 329,358.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,408 : 218,841 = 218,841 : x
  2. Step 2: Convert to fraction form
    145,408/218,841 = 218,841/x
  3. Step 3: Cross multiply
    145,408x = 218,841 × 218,841
  4. Step 4: Simplify right side
    145,408x = 47,891,383,281
  5. Step 5: Solve for x
    x = 47,891,383,281/145,408
  6. Step 6: Final answer
    x = 329,358.65

Related Problems

Find third proportional to 72,704 and 109,420.50
Half scale
Find third proportional to 290,816 and 437,682
Double scale
Find third proportional to 145,410 and 218,844
Similar ratio
Find third proportional to 218,112 and 328,261.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.