Finding the Fourth Proportional to 276,659,811.20, 414,989,716.80 and 85,183,587.20
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Solution
The fourth proportional to 276,659,811.20, 414,989,716.80 and 85,183,587.20 is: 127,775,380.80
Step by Step Solution
- Step 1: Write the proportion equation
276,659,811.20 : 414,989,716.80 = 85,183,587.20 : x - Step 2: Convert to fraction form
276,659,811.20/414,989,716.80 = 85,183,587.20/x - Step 3: Cross multiply
276,659,811.20x = 414,989,716.80 × 85,183,587.20 - Step 4: Simplify right side
276,659,811.20x = 35,350,312,728,136,108 - Step 5: Solve for x
x = 35,350,312,728,136,108/276,659,811.20 - Step 6: Final answer
x = 127,775,380.80
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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.