Finding the Fourth Proportional to 378,794.18, 522,825.43 and 217,742.65
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Solution
The fourth proportional to 378,794.18, 522,825.43 and 217,742.65 is: 300,536.28
Step by Step Solution
- Step 1: Write the proportion equation
378,794.18 : 522,825.43 = 217,742.65 : x - Step 2: Convert to fraction form
378,794.18/522,825.43 = 217,742.65/x - Step 3: Cross multiply
378,794.18x = 522,825.43 × 217,742.65 - Step 4: Simplify right side
378,794.18x = 113,841,394,615.59 - Step 5: Solve for x
x = 113,841,394,615.59/378,794.18 - Step 6: Final answer
x = 300,536.28
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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.