Finding the Fourth Proportional to 378,938.98, 522,935.67 and 209,173.06
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Solution
The fourth proportional to 378,938.98, 522,935.67 and 209,173.06 is: 288,658.76
Step by Step Solution
- Step 1: Write the proportion equation
378,938.98 : 522,935.67 = 209,173.06 : x - Step 2: Convert to fraction form
378,938.98/522,935.67 = 209,173.06/x - Step 3: Cross multiply
378,938.98x = 522,935.67 × 209,173.06 - Step 4: Simplify right side
378,938.98x = 109,384,054,277.05 - Step 5: Solve for x
x = 109,384,054,277.05/378,938.98 - Step 6: Final answer
x = 288,658.76
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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.