Finding the Fourth Proportional to 378,838.14, 522,794.22 and 209,072.28
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Solution
The fourth proportional to 378,838.14, 522,794.22 and 209,072.28 is: 288,518.41
Step by Step Solution
- Step 1: Write the proportion equation
378,838.14 : 522,794.22 = 209,072.28 : x - Step 2: Convert to fraction form
378,838.14/522,794.22 = 209,072.28/x - Step 3: Cross multiply
378,838.14x = 522,794.22 × 209,072.28 - Step 4: Simplify right side
378,838.14x = 109,301,779,546.22 - Step 5: Solve for x
x = 109,301,779,546.22/378,838.14 - Step 6: Final answer
x = 288,518.41
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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.