Finding the Fourth Proportional to 285,205.79, 393,584.11 and 156,152.63
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Solution
The fourth proportional to 285,205.79, 393,584.11 and 156,152.63 is: 215,490.69
Step by Step Solution
- Step 1: Write the proportion equation
285,205.79 : 393,584.11 = 156,152.63 : x - Step 2: Convert to fraction form
285,205.79/393,584.11 = 156,152.63/x - Step 3: Cross multiply
285,205.79x = 393,584.11 × 156,152.63 - Step 4: Simplify right side
285,205.79x = 61,459,193,902.71 - Step 5: Solve for x
x = 61,459,193,902.71/285,205.79 - Step 6: Final answer
x = 215,490.69
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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.