Finding the Fourth Proportional to 378,578.61, 522,429.35 and 208,809.09
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Solution
The fourth proportional to 378,578.61, 522,429.35 and 208,809.09 is: 288,151.50
Step by Step Solution
- Step 1: Write the proportion equation
378,578.61 : 522,429.35 = 208,809.09 : x - Step 2: Convert to fraction form
378,578.61/522,429.35 = 208,809.09/x - Step 3: Cross multiply
378,578.61x = 522,429.35 × 208,809.09 - Step 4: Simplify right side
378,578.61x = 109,087,996,118.75 - Step 5: Solve for x
x = 109,087,996,118.75/378,578.61 - Step 6: Final answer
x = 288,151.50
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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.