Finding the Fourth Proportional to 272,406.40, 408,916.80 and 161,660.80
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Solution
The fourth proportional to 272,406.40, 408,916.80 and 161,660.80 is: 242,673.51
Step by Step Solution
- Step 1: Write the proportion equation
272,406.40 : 408,916.80 = 161,660.80 : x - Step 2: Convert to fraction form
272,406.40/408,916.80 = 161,660.80/x - Step 3: Cross multiply
272,406.40x = 408,916.80 × 161,660.80 - Step 4: Simplify right side
272,406.40x = 66,105,817,021.44 - Step 5: Solve for x
x = 66,105,817,021.44/272,406.40 - Step 6: Final answer
x = 242,673.51
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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.