Finding the Fourth Proportional to 285,391.08, 393,825.24 and 156,327.84
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Solution
The fourth proportional to 285,391.08, 393,825.24 and 156,327.84 is: 215,724.50
Step by Step Solution
- Step 1: Write the proportion equation
285,391.08 : 393,825.24 = 156,327.84 : x - Step 2: Convert to fraction form
285,391.08/393,825.24 = 156,327.84/x - Step 3: Cross multiply
285,391.08x = 393,825.24 × 156,327.84 - Step 4: Simplify right side
285,391.08x = 61,565,849,106.68 - Step 5: Solve for x
x = 61,565,849,106.68/285,391.08 - Step 6: Final answer
x = 215,724.50
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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.