Finding the Fourth Proportional to 378,205.36, 521,925.81 and 208,439.49
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Solution
The fourth proportional to 378,205.36, 521,925.81 and 208,439.49 is: 287,647.82
Step by Step Solution
- Step 1: Write the proportion equation
378,205.36 : 521,925.81 = 208,439.49 : x - Step 2: Convert to fraction form
378,205.36/521,925.81 = 208,439.49/x - Step 3: Cross multiply
378,205.36x = 521,925.81 × 208,439.49 - Step 4: Simplify right side
378,205.36x = 108,789,946,002.41 - Step 5: Solve for x
x = 108,789,946,002.41/378,205.36 - Step 6: Final answer
x = 287,647.82
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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.