Finding the Fourth Proportional to 328,566.73, 492,638.19 and 128,907.31
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Solution
The fourth proportional to 328,566.73, 492,638.19 and 128,907.31 is: 193,277.82
Step by Step Solution
- Step 1: Write the proportion equation
328,566.73 : 492,638.19 = 128,907.31 : x - Step 2: Convert to fraction form
328,566.73/492,638.19 = 128,907.31/x - Step 3: Cross multiply
328,566.73x = 492,638.19 × 128,907.31 - Step 4: Simplify right side
328,566.73x = 63,504,661,412.98 - Step 5: Solve for x
x = 63,504,661,412.98/328,566.73 - Step 6: Final answer
x = 193,277.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.