Finding the Fourth Proportional to 330,199.80, 495,299.70 and 212,101.80
Calculator
Solution
The fourth proportional to 330,199.80, 495,299.70 and 212,101.80 is: 318,152.70
Step by Step Solution
- Step 1: Write the proportion equation
330,199.80 : 495,299.70 = 212,101.80 : x - Step 2: Convert to fraction form
330,199.80/495,299.70 = 212,101.80/x - Step 3: Cross multiply
330,199.80x = 495,299.70 × 212,101.80 - Step 4: Simplify right side
330,199.80x = 105,053,957,909.46 - Step 5: Solve for x
x = 105,053,957,909.46/330,199.80 - Step 6: Final answer
x = 318,152.70
Related Problems
Find fourth proportional to 165,099.90, 247,649.85 and 106,050.90
Half scale
Find fourth proportional to 660,399.60, 990,599.40 and 424,203.60
Double scale
Find fourth proportional to 330,200.80, 495,301.20 and 212,102.80
Similar ratio
Find fourth proportional to 495,299.70, 742,949.55 and 318,152.70
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.