Finding the Fourth Proportional to 285,748.12, 394,332.42 and 158,420.92
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Solution
The fourth proportional to 285,748.12, 394,332.42 and 158,420.92 is: 218,620.88
Step by Step Solution
- Step 1: Write the proportion equation
285,748.12 : 394,332.42 = 158,420.92 : x - Step 2: Convert to fraction form
285,748.12/394,332.42 = 158,420.92/x - Step 3: Cross multiply
285,748.12x = 394,332.42 × 158,420.92 - Step 4: Simplify right side
285,748.12x = 62,470,504,762.23 - Step 5: Solve for x
x = 62,470,504,762.23/285,748.12 - Step 6: Final answer
x = 218,620.88
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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.