Finding the Fourth Proportional to 378,130.14, 521,830.74 and 208,375.20
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Solution
The fourth proportional to 378,130.14, 521,830.74 and 208,375.20 is: 287,563.92
Step by Step Solution
- Step 1: Write the proportion equation
378,130.14 : 521,830.74 = 208,375.20 : x - Step 2: Convert to fraction form
378,130.14/521,830.74 = 208,375.20/x - Step 3: Cross multiply
378,130.14x = 521,830.74 × 208,375.20 - Step 4: Simplify right side
378,130.14x = 108,736,584,813.65 - Step 5: Solve for x
x = 108,736,584,813.65/378,130.14 - Step 6: Final answer
x = 287,563.92
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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.