Finding the Fourth Proportional to 285,175.86, 393,515.70 and 170,431.68
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Solution
The fourth proportional to 285,175.86, 393,515.70 and 170,431.68 is: 235,179.59
Step by Step Solution
- Step 1: Write the proportion equation
285,175.86 : 393,515.70 = 170,431.68 : x - Step 2: Convert to fraction form
285,175.86/393,515.70 = 170,431.68/x - Step 3: Cross multiply
285,175.86x = 393,515.70 × 170,431.68 - Step 4: Simplify right side
285,175.86x = 67,067,541,857.38 - Step 5: Solve for x
x = 67,067,541,857.38/285,175.86 - Step 6: Final answer
x = 235,179.59
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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.