Finding the Fourth Proportional to 285,163.32, 393,520.60 and 157,836.18
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Solution
The fourth proportional to 285,163.32, 393,520.60 and 157,836.18 is: 217,811.28
Step by Step Solution
- Step 1: Write the proportion equation
285,163.32 : 393,520.60 = 157,836.18 : x - Step 2: Convert to fraction form
285,163.32/393,520.60 = 157,836.18/x - Step 3: Cross multiply
285,163.32x = 393,520.60 × 157,836.18 - Step 4: Simplify right side
285,163.32x = 62,111,788,255.31 - Step 5: Solve for x
x = 62,111,788,255.31/285,163.32 - Step 6: Final answer
x = 217,811.28
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1.5x scale
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.