Finding the Fourth Proportional to 328,549.20, 492,787.35 and 91,915.80
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Solution
The fourth proportional to 328,549.20, 492,787.35 and 91,915.80 is: 137,863.50
Step by Step Solution
- Step 1: Write the proportion equation
328,549.20 : 492,787.35 = 91,915.80 : x - Step 2: Convert to fraction form
328,549.20/492,787.35 = 91,915.80/x - Step 3: Cross multiply
328,549.20x = 492,787.35 × 91,915.80 - Step 4: Simplify right side
328,549.20x = 45,294,943,505.13 - Step 5: Solve for x
x = 45,294,943,505.13/328,549.20 - Step 6: Final answer
x = 137,863.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.