Finding the Fourth Proportional to 378,949.96, 522,955.14 and 209,184.28
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Solution
The fourth proportional to 378,949.96, 522,955.14 and 209,184.28 is: 288,676.62
Step by Step Solution
- Step 1: Write the proportion equation
378,949.96 : 522,955.14 = 209,184.28 : x - Step 2: Convert to fraction form
378,949.96/522,955.14 = 209,184.28/x - Step 3: Cross multiply
378,949.96x = 522,955.14 × 209,184.28 - Step 4: Simplify right side
378,949.96x = 109,393,994,433.20 - Step 5: Solve for x
x = 109,393,994,433.20/378,949.96 - Step 6: Final answer
x = 288,676.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.