Finding the Fourth Proportional to 378,914.25, 522,901.71 and 209,148.42
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Solution
The fourth proportional to 378,914.25, 522,901.71 and 209,148.42 is: 288,624.84
Step by Step Solution
- Step 1: Write the proportion equation
378,914.25 : 522,901.71 = 209,148.42 : x - Step 2: Convert to fraction form
378,914.25/522,901.71 = 209,148.42/x - Step 3: Cross multiply
378,914.25x = 522,901.71 × 209,148.42 - Step 4: Simplify right side
378,914.25x = 109,364,066,461.80 - Step 5: Solve for x
x = 109,364,066,461.80/378,914.25 - Step 6: Final answer
x = 288,624.84
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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.