Home / 236-353.94-139.88

Finding the Fourth Proportional to 236, 353.94 and 139.88

Calculator

Solution

The fourth proportional to 236, 353.94 and 139.88 is: 209.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    236 : 353.94 = 139.88 : x
  2. Step 2: Convert to fraction form
    236/353.94 = 139.88/x
  3. Step 3: Cross multiply
    236x = 353.94 × 139.88
  4. Step 4: Simplify right side
    236x = 49,509.13
  5. Step 5: Solve for x
    x = 49,509.13/236
  6. Step 6: Final answer
    x = 209.78

Related Problems

Find fourth proportional to 118, 176.97 and 69.94
Half scale
Find fourth proportional to 472, 707.88 and 279.76
Double scale
Find fourth proportional to 237, 355.44 and 140.88
Similar ratio
Find fourth proportional to 354, 530.91 and 209.82
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.