Finding the Fourth Proportional to 389,728.96, 537,915.84 and 228,635.76
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Solution
The fourth proportional to 389,728.96, 537,915.84 and 228,635.76 is: 315,570.07
Step by Step Solution
- Step 1: Write the proportion equation
389,728.96 : 537,915.84 = 228,635.76 : x - Step 2: Convert to fraction form
389,728.96/537,915.84 = 228,635.76/x - Step 3: Cross multiply
389,728.96x = 537,915.84 × 228,635.76 - Step 4: Simplify right side
389,728.96x = 122,986,796,894.44 - Step 5: Solve for x
x = 122,986,796,894.44/389,728.96 - Step 6: Final answer
x = 315,570.07
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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.