Finding the Fourth Proportional to 387,043.79, 534,121.67 and 214,961.73
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Solution
The fourth proportional to 387,043.79, 534,121.67 and 214,961.73 is: 296,647.87
Step by Step Solution
- Step 1: Write the proportion equation
387,043.79 : 534,121.67 = 214,961.73 : x - Step 2: Convert to fraction form
387,043.79/534,121.67 = 214,961.73/x - Step 3: Cross multiply
387,043.79x = 534,121.67 × 214,961.73 - Step 4: Simplify right side
387,043.79x = 114,815,715,543.08 - Step 5: Solve for x
x = 114,815,715,543.08/387,043.79 - Step 6: Final answer
x = 296,647.87
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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.