Finding the Fourth Proportional to 378,938.84, 522,934.53 and 209,171.75
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Solution
The fourth proportional to 378,938.84, 522,934.53 and 209,171.75 is: 288,656.42
Step by Step Solution
- Step 1: Write the proportion equation
378,938.84 : 522,934.53 = 209,171.75 : x - Step 2: Convert to fraction form
378,938.84/522,934.53 = 209,171.75/x - Step 3: Cross multiply
378,938.84x = 522,934.53 × 209,171.75 - Step 4: Simplify right side
378,938.84x = 109,383,130,775.53 - Step 5: Solve for x
x = 109,383,130,775.53/378,938.84 - Step 6: Final answer
x = 288,656.42
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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.