Home / 203,472-305,208-78,813

Finding the Fourth Proportional to 203,472, 305,208 and 78,813

Calculator

Solution

The fourth proportional to 203,472, 305,208 and 78,813 is: 118,219.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,472 : 305,208 = 78,813 : x
  2. Step 2: Convert to fraction form
    203,472/305,208 = 78,813/x
  3. Step 3: Cross multiply
    203,472x = 305,208 × 78,813
  4. Step 4: Simplify right side
    203,472x = 24,054,358,104
  5. Step 5: Solve for x
    x = 24,054,358,104/203,472
  6. Step 6: Final answer
    x = 118,219.50

Related Problems

Find fourth proportional to 101,736, 152,604 and 39,406.50
Half scale
Find fourth proportional to 406,944, 610,416 and 157,626
Double scale
Find fourth proportional to 203,473, 305,209.50 and 78,814
Similar ratio
Find fourth proportional to 305,208, 457,812 and 118,219.50
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.