Finding the Fourth Proportional to 378,812.80, 522,772.68 and 206,741.82
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Solution
The fourth proportional to 378,812.80, 522,772.68 and 206,741.82 is: 285,309.72
Step by Step Solution
- Step 1: Write the proportion equation
378,812.80 : 522,772.68 = 206,741.82 : x - Step 2: Convert to fraction form
378,812.80/522,772.68 = 206,741.82/x - Step 3: Cross multiply
378,812.80x = 522,772.68 × 206,741.82 - Step 4: Simplify right side
378,812.80x = 108,078,971,661.91 - Step 5: Solve for x
x = 108,078,971,661.91/378,812.80 - Step 6: Final answer
x = 285,309.72
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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.