Finding the Fourth Proportional to 397,406.76, 548,431.62 and 216,129.96
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Solution
The fourth proportional to 397,406.76, 548,431.62 and 216,129.96 is: 298,264.94
Step by Step Solution
- Step 1: Write the proportion equation
397,406.76 : 548,431.62 = 216,129.96 : x - Step 2: Convert to fraction form
397,406.76/548,431.62 = 216,129.96/x - Step 3: Cross multiply
397,406.76x = 548,431.62 × 216,129.96 - Step 4: Simplify right side
397,406.76x = 118,532,504,093.34 - Step 5: Solve for x
x = 118,532,504,093.34/397,406.76 - Step 6: Final answer
x = 298,264.94
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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.