Finding the Fourth Proportional to 385,368.48, 578,067.84 and 119,105.28
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Solution
The fourth proportional to 385,368.48, 578,067.84 and 119,105.28 is: 178,662.59
Step by Step Solution
- Step 1: Write the proportion equation
385,368.48 : 578,067.84 = 119,105.28 : x - Step 2: Convert to fraction form
385,368.48/578,067.84 = 119,105.28/x - Step 3: Cross multiply
385,368.48x = 578,067.84 × 119,105.28 - Step 4: Simplify right side
385,368.48x = 68,850,931,942.20 - Step 5: Solve for x
x = 68,850,931,942.20/385,368.48 - Step 6: Final answer
x = 178,662.59
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.