Finding the Fourth Proportional to 285,723.42, 394,307.91 and 158,391.42
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Solution
The fourth proportional to 285,723.42, 394,307.91 and 158,391.42 is: 218,585.48
Step by Step Solution
- Step 1: Write the proportion equation
285,723.42 : 394,307.91 = 158,391.42 : x - Step 2: Convert to fraction form
285,723.42/394,307.91 = 158,391.42/x - Step 3: Cross multiply
285,723.42x = 394,307.91 × 158,391.42 - Step 4: Simplify right side
285,723.42x = 62,454,989,782.13 - Step 5: Solve for x
x = 62,454,989,782.13/285,723.42 - Step 6: Final answer
x = 218,585.48
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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.