Finding the Fourth Proportional to 420,827.20, 580,737.18 and 229,840.60
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Solution
The fourth proportional to 420,827.20, 580,737.18 and 229,840.60 is: 317,177.65
Step by Step Solution
- Step 1: Write the proportion equation
420,827.20 : 580,737.18 = 229,840.60 : x - Step 2: Convert to fraction form
420,827.20/580,737.18 = 229,840.60/x - Step 3: Cross multiply
420,827.20x = 580,737.18 × 229,840.60 - Step 4: Simplify right side
420,827.20x = 133,476,981,893.51 - Step 5: Solve for x
x = 133,476,981,893.51/420,827.20 - Step 6: Final answer
x = 317,177.65
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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.