Finding the Fourth Proportional to 397,915.20, 549,105.08 and 216,622.49
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Solution
The fourth proportional to 397,915.20, 549,105.08 and 216,622.49 is: 298,929.28
Step by Step Solution
- Step 1: Write the proportion equation
397,915.20 : 549,105.08 = 216,622.49 : x - Step 2: Convert to fraction form
397,915.20/549,105.08 = 216,622.49/x - Step 3: Cross multiply
397,915.20x = 549,105.08 × 216,622.49 - Step 4: Simplify right side
397,915.20x = 118,948,505,872.61 - Step 5: Solve for x
x = 118,948,505,872.61/397,915.20 - Step 6: Final answer
x = 298,929.28
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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.