Home / 315,015-472,522.50-81,543

Finding the Fourth Proportional to 315,015, 472,522.50 and 81,543

Calculator

Solution

The fourth proportional to 315,015, 472,522.50 and 81,543 is: 122,314.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,015 : 472,522.50 = 81,543 : x
  2. Step 2: Convert to fraction form
    315,015/472,522.50 = 81,543/x
  3. Step 3: Cross multiply
    315,015x = 472,522.50 × 81,543
  4. Step 4: Simplify right side
    315,015x = 38,530,902,217.50
  5. Step 5: Solve for x
    x = 38,530,902,217.50/315,015
  6. Step 6: Final answer
    x = 122,314.50

Related Problems

Find fourth proportional to 157,507.50, 236,261.25 and 40,771.50
Half scale
Find fourth proportional to 630,030, 945,045 and 163,086
Double scale
Find fourth proportional to 315,016, 472,524 and 81,544
Similar ratio
Find fourth proportional to 472,522.50, 708,783.75 and 122,314.50
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.