Finding the Fourth Proportional to 378,639.68, 522,519.84 and 208,880.96
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Solution
The fourth proportional to 378,639.68, 522,519.84 and 208,880.96 is: 288,254.11
Step by Step Solution
- Step 1: Write the proportion equation
378,639.68 : 522,519.84 = 208,880.96 : x - Step 2: Convert to fraction form
378,639.68/522,519.84 = 208,880.96/x - Step 3: Cross multiply
378,639.68x = 522,519.84 × 208,880.96 - Step 4: Simplify right side
378,639.68x = 109,144,445,798.25 - Step 5: Solve for x
x = 109,144,445,798.25/378,639.68 - Step 6: Final answer
x = 288,254.11
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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.