Finding the Fourth Proportional to 378,943.60, 522,942.08 and 209,177.68
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Solution
The fourth proportional to 378,943.60, 522,942.08 and 209,177.68 is: 288,665.15
Step by Step Solution
- Step 1: Write the proportion equation
378,943.60 : 522,942.08 = 209,177.68 : x - Step 2: Convert to fraction form
378,943.60/522,942.08 = 209,177.68/x - Step 3: Cross multiply
378,943.60x = 522,942.08 × 209,177.68 - Step 4: Simplify right side
378,943.60x = 109,387,811,068.77 - Step 5: Solve for x
x = 109,387,811,068.77/378,943.60 - Step 6: Final answer
x = 288,665.15
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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.