Finding the Fourth Proportional to 378,219.36, 521,941.14 and 208,453.08
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Solution
The fourth proportional to 378,219.36, 521,941.14 and 208,453.08 is: 287,664.38
Step by Step Solution
- Step 1: Write the proportion equation
378,219.36 : 521,941.14 = 208,453.08 : x - Step 2: Convert to fraction form
378,219.36/521,941.14 = 208,453.08/x - Step 3: Cross multiply
378,219.36x = 521,941.14 × 208,453.08 - Step 4: Simplify right side
378,219.36x = 108,800,238,211.71 - Step 5: Solve for x
x = 108,800,238,211.71/378,219.36 - Step 6: Final answer
x = 287,664.38
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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.