Finding the Fourth Proportional to 285,235.44, 393,609.92 and 156,149.18
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Solution
The fourth proportional to 285,235.44, 393,609.92 and 156,149.18 is: 215,477.66
Step by Step Solution
- Step 1: Write the proportion equation
285,235.44 : 393,609.92 = 156,149.18 : x - Step 2: Convert to fraction form
285,235.44/393,609.92 = 156,149.18/x - Step 3: Cross multiply
285,235.44x = 393,609.92 × 156,149.18 - Step 4: Simplify right side
285,235.44x = 61,461,866,247.87 - Step 5: Solve for x
x = 61,461,866,247.87/285,235.44 - Step 6: Final answer
x = 215,477.66
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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.