Home / 254,400-381,600-79,296

Finding the Fourth Proportional to 254,400, 381,600 and 79,296

Calculator

Solution

The fourth proportional to 254,400, 381,600 and 79,296 is: 118,944

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,400 : 381,600 = 79,296 : x
  2. Step 2: Convert to fraction form
    254,400/381,600 = 79,296/x
  3. Step 3: Cross multiply
    254,400x = 381,600 × 79,296
  4. Step 4: Simplify right side
    254,400x = 30,259,353,600
  5. Step 5: Solve for x
    x = 30,259,353,600/254,400
  6. Step 6: Final answer
    x = 118,944

Related Problems

Find fourth proportional to 127,200, 190,800 and 39,648
Half scale
Find fourth proportional to 508,800, 763,200 and 158,592
Double scale
Find fourth proportional to 254,401, 381,601.50 and 79,297
Similar ratio
Find fourth proportional to 381,600, 572,400 and 118,944
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.