Finding the Fourth Proportional to 386,425.26, 579,639.42 and 161,628.03
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Solution
The fourth proportional to 386,425.26, 579,639.42 and 161,628.03 is: 242,442.68
Step by Step Solution
- Step 1: Write the proportion equation
386,425.26 : 579,639.42 = 161,628.03 : x - Step 2: Convert to fraction form
386,425.26/579,639.42 = 161,628.03/x - Step 3: Cross multiply
386,425.26x = 579,639.42 × 161,628.03 - Step 4: Simplify right side
386,425.26x = 93,685,977,564.94 - Step 5: Solve for x
x = 93,685,977,564.94/386,425.26 - Step 6: Final answer
x = 242,442.68
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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.