Finding the Fourth Proportional to 291,915.20, 437,840.40 and 239,232.80
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Solution
The fourth proportional to 291,915.20, 437,840.40 and 239,232.80 is: 358,822.65
Step by Step Solution
- Step 1: Write the proportion equation
291,915.20 : 437,840.40 = 239,232.80 : x - Step 2: Convert to fraction form
291,915.20/437,840.40 = 239,232.80/x - Step 3: Cross multiply
291,915.20x = 437,840.40 × 239,232.80 - Step 4: Simplify right side
291,915.20x = 104,745,784,845.12 - Step 5: Solve for x
x = 104,745,784,845.12/291,915.20 - Step 6: Final answer
x = 358,822.65
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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.