Finding the Fourth Proportional to 285,691.44, 394,258.62 and 156,641.70
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Solution
The fourth proportional to 285,691.44, 394,258.62 and 156,641.70 is: 216,167.98
Step by Step Solution
- Step 1: Write the proportion equation
285,691.44 : 394,258.62 = 156,641.70 : x - Step 2: Convert to fraction form
285,691.44/394,258.62 = 156,641.70/x - Step 3: Cross multiply
285,691.44x = 394,258.62 × 156,641.70 - Step 4: Simplify right side
285,691.44x = 61,757,340,324.63 - Step 5: Solve for x
x = 61,757,340,324.63/285,691.44 - Step 6: Final answer
x = 216,167.98
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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.