Finding the Fourth Proportional to 217,647.18, 300,353.11 and 122,153.88
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Solution
The fourth proportional to 217,647.18, 300,353.11 and 122,153.88 is: 168,572.35
Step by Step Solution
- Step 1: Write the proportion equation
217,647.18 : 300,353.11 = 122,153.88 : x - Step 2: Convert to fraction form
217,647.18/300,353.11 = 122,153.88/x - Step 3: Cross multiply
217,647.18x = 300,353.11 × 122,153.88 - Step 4: Simplify right side
217,647.18x = 36,689,295,644.03 - Step 5: Solve for x
x = 36,689,295,644.03/217,647.18 - Step 6: Final answer
x = 168,572.35
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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.