Finding the Fourth Proportional to 397,394.28, 548,406.68 and 216,108.18
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Solution
The fourth proportional to 397,394.28, 548,406.68 and 216,108.18 is: 298,230.69
Step by Step Solution
- Step 1: Write the proportion equation
397,394.28 : 548,406.68 = 216,108.18 : x - Step 2: Convert to fraction form
397,394.28/548,406.68 = 216,108.18/x - Step 3: Cross multiply
397,394.28x = 548,406.68 × 216,108.18 - Step 4: Simplify right side
397,394.28x = 118,515,168,434.10 - Step 5: Solve for x
x = 118,515,168,434.10/397,394.28 - Step 6: Final answer
x = 298,230.69
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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.