Finding the Fourth Proportional to 255,780,766.62, 352,977,209.10 and 138,305,815.74
Calculator
Solution
The fourth proportional to 255,780,766.62, 352,977,209.10 and 138,305,815.74 is: 190,861,891.17
Step by Step Solution
- Step 1: Write the proportion equation
255,780,766.62 : 352,977,209.10 = 138,305,815.74 : x - Step 2: Convert to fraction form
255,780,766.62/352,977,209.10 = 138,305,815.74/x - Step 3: Cross multiply
255,780,766.62x = 352,977,209.10 × 138,305,815.74 - Step 4: Simplify right side
255,780,766.62x = 48,818,800,842,204,056 - Step 5: Solve for x
x = 48,818,800,842,204,056/255,780,766.62 - Step 6: Final answer
x = 190,861,891.17
Related Problems
Find fourth proportional to 127,890,383.31, 176,488,604.55 and 69,152,907.87
Half scale
Find fourth proportional to 511,561,533.24, 705,954,418.20 and 276,611,631.48
Double scale
Find fourth proportional to 255,780,767.62, 352,977,210.48 and 138,305,816.74
Similar ratio
Find fourth proportional to 383,671,149.93, 529,465,813.65 and 207,458,723.61
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.