Home / 216-324-152.28

Finding the Fourth Proportional to 216, 324 and 152.28

Calculator

Solution

The fourth proportional to 216, 324 and 152.28 is: 228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216 : 324 = 152.28 : x
  2. Step 2: Convert to fraction form
    216/324 = 152.28/x
  3. Step 3: Cross multiply
    216x = 324 × 152.28
  4. Step 4: Simplify right side
    216x = 49,338.72
  5. Step 5: Solve for x
    x = 49,338.72/216
  6. Step 6: Final answer
    x = 228.42

Related Problems

Find fourth proportional to 108, 162 and 76.14
Half scale
Find fourth proportional to 432, 648 and 304.56
Double scale
Find fourth proportional to 217, 325.50 and 153.28
Similar ratio
Find fourth proportional to 324, 486 and 228.42
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.