Finding the Fourth Proportional to 420,717.48, 580,590.07 and 229,731.05
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Solution
The fourth proportional to 420,717.48, 580,590.07 and 229,731.05 is: 317,028.81
Step by Step Solution
- Step 1: Write the proportion equation
420,717.48 : 580,590.07 = 229,731.05 : x - Step 2: Convert to fraction form
420,717.48/580,590.07 = 229,731.05/x - Step 3: Cross multiply
420,717.48x = 580,590.07 × 229,731.05 - Step 4: Simplify right side
420,717.48x = 133,379,562,923.40 - Step 5: Solve for x
x = 133,379,562,923.40/420,717.48 - Step 6: Final answer
x = 317,028.81
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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.