Finding the Fourth Proportional to 311,067.12, 429,265.56 and 173,245.08
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Solution
The fourth proportional to 311,067.12, 429,265.56 and 173,245.08 is: 239,074.28
Step by Step Solution
- Step 1: Write the proportion equation
311,067.12 : 429,265.56 = 173,245.08 : x - Step 2: Convert to fraction form
311,067.12/429,265.56 = 173,245.08/x - Step 3: Cross multiply
311,067.12x = 429,265.56 × 173,245.08 - Step 4: Simplify right side
311,067.12x = 74,368,146,283.44 - Step 5: Solve for x
x = 74,368,146,283.44/311,067.12 - Step 6: Final answer
x = 239,074.28
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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.