Finding the Fourth Proportional to 378,919.24, 522,908.60 and 209,153.44
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Solution
The fourth proportional to 378,919.24, 522,908.60 and 209,153.44 is: 288,631.77
Step by Step Solution
- Step 1: Write the proportion equation
378,919.24 : 522,908.60 = 209,153.44 : x - Step 2: Convert to fraction form
378,919.24/522,908.60 = 209,153.44/x - Step 3: Cross multiply
378,919.24x = 522,908.60 × 209,153.44 - Step 4: Simplify right side
378,919.24x = 109,368,132,495.58 - Step 5: Solve for x
x = 109,368,132,495.58/378,919.24 - Step 6: Final answer
x = 288,631.77
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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.