Finding the Fourth Proportional to 638,349.44, 957,197.82 and 211,731.28
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Solution
The fourth proportional to 638,349.44, 957,197.82 and 211,731.28 is: 317,488.68
Step by Step Solution
- Step 1: Write the proportion equation
638,349.44 : 957,197.82 = 211,731.28 : x - Step 2: Convert to fraction form
638,349.44/957,197.82 = 211,731.28/x - Step 3: Cross multiply
638,349.44x = 957,197.82 × 211,731.28 - Step 4: Simplify right side
638,349.44x = 202,668,719,641.81 - Step 5: Solve for x
x = 202,668,719,641.81/638,349.44 - Step 6: Final answer
x = 317,488.68
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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.