Finding the Fourth Proportional to 285,982.20, 394,702.68 and 158,698.80
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Solution
The fourth proportional to 285,982.20, 394,702.68 and 158,698.80 is: 219,030.56
Step by Step Solution
- Step 1: Write the proportion equation
285,982.20 : 394,702.68 = 158,698.80 : x - Step 2: Convert to fraction form
285,982.20/394,702.68 = 158,698.80/x - Step 3: Cross multiply
285,982.20x = 394,702.68 × 158,698.80 - Step 4: Simplify right side
285,982.20x = 62,638,841,672.78 - Step 5: Solve for x
x = 62,638,841,672.78/285,982.20 - Step 6: Final answer
x = 219,030.56
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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.