Finding the Fourth Proportional to 420,907.44, 580,842.72 and 229,921.68
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Solution
The fourth proportional to 420,907.44, 580,842.72 and 229,921.68 is: 317,286.70
Step by Step Solution
- Step 1: Write the proportion equation
420,907.44 : 580,842.72 = 229,921.68 : x - Step 2: Convert to fraction form
420,907.44/580,842.72 = 229,921.68/x - Step 3: Cross multiply
420,907.44x = 580,842.72 × 229,921.68 - Step 4: Simplify right side
420,907.44x = 133,548,333,998.17 - Step 5: Solve for x
x = 133,548,333,998.17/420,907.44 - Step 6: Final answer
x = 317,286.70
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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.