Home / 140.63-218.53

Finding the Third Proportional to 140.63 and 218.53

Calculator

Solution

The third proportional to 140.63 and 218.53 is: 339.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.63 : 218.53 = 218.53 : x
  2. Step 2: Convert to fraction form
    140.63/218.53 = 218.53/x
  3. Step 3: Cross multiply
    140.63x = 218.53 × 218.53
  4. Step 4: Simplify right side
    140.63x = 47,755.91
  5. Step 5: Solve for x
    x = 47,755.91/140.63
  6. Step 6: Final answer
    x = 339.60

Related Problems

Find third proportional to 70.31 and 109.27
Half scale
Find third proportional to 281.25 and 437.06
Double scale
Find third proportional to 143 and 222
Similar ratio
Find third proportional to 210.94 and 327.80
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.