Finding the Fourth Proportional to 389,853.62, 537,940.74 and 217,750.38
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Solution
The fourth proportional to 389,853.62, 537,940.74 and 217,750.38 is: 300,463.54
Step by Step Solution
- Step 1: Write the proportion equation
389,853.62 : 537,940.74 = 217,750.38 : x - Step 2: Convert to fraction form
389,853.62/537,940.74 = 217,750.38/x - Step 3: Cross multiply
389,853.62x = 537,940.74 × 217,750.38 - Step 4: Simplify right side
389,853.62x = 117,136,799,463.73 - Step 5: Solve for x
x = 117,136,799,463.73/389,853.62 - Step 6: Final answer
x = 300,463.54
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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.