Finding the Fourth Proportional to 455,867.51, 683,257.75 and 212,381.96
Calculator
Solution
The fourth proportional to 455,867.51, 683,257.75 and 212,381.96 is: 318,319.72
Step by Step Solution
- Step 1: Write the proportion equation
455,867.51 : 683,257.75 = 212,381.96 : x - Step 2: Convert to fraction form
455,867.51/683,257.75 = 212,381.96/x - Step 3: Cross multiply
455,867.51x = 683,257.75 × 212,381.96 - Step 4: Simplify right side
455,867.51x = 145,111,620,130.19 - Step 5: Solve for x
x = 145,111,620,130.19/455,867.51 - Step 6: Final answer
x = 318,319.72
Related Problems
Find fourth proportional to 227,933.76, 341,628.88 and 106,190.98
Half scale
Find fourth proportional to 911,735.02, 1,366,515.50 and 424,763.92
Double scale
Find fourth proportional to 455,868.51, 683,259.25 and 212,382.96
Similar ratio
Find fourth proportional to 683,801.27, 1,024,886.63 and 318,572.94
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.