Finding the Fourth Proportional to 391,455.24, 587,274.78 and 121,569.60
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Solution
The fourth proportional to 391,455.24, 587,274.78 and 121,569.60 is: 182,382.95
Step by Step Solution
- Step 1: Write the proportion equation
391,455.24 : 587,274.78 = 121,569.60 : x - Step 2: Convert to fraction form
391,455.24/587,274.78 = 121,569.60/x - Step 3: Cross multiply
391,455.24x = 587,274.78 × 121,569.60 - Step 4: Simplify right side
391,455.24x = 71,394,760,094.69 - Step 5: Solve for x
x = 71,394,760,094.69/391,455.24 - Step 6: Final answer
x = 182,382.95
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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.