Finding the Fourth Proportional to 272,390.40, 408,892.80 and 161,644.80
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Solution
The fourth proportional to 272,390.40, 408,892.80 and 161,644.80 is: 242,649.50
Step by Step Solution
- Step 1: Write the proportion equation
272,390.40 : 408,892.80 = 161,644.80 : x - Step 2: Convert to fraction form
272,390.40/408,892.80 = 161,644.80/x - Step 3: Cross multiply
272,390.40x = 408,892.80 × 161,644.80 - Step 4: Simplify right side
272,390.40x = 66,095,394,877.44 - Step 5: Solve for x
x = 66,095,394,877.44/272,390.40 - Step 6: Final answer
x = 242,649.50
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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.