Finding the Fourth Proportional to 399,640.67, 551,497.60 and 218,348.70
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Solution
The fourth proportional to 399,640.67, 551,497.60 and 218,348.70 is: 301,317.64
Step by Step Solution
- Step 1: Write the proportion equation
399,640.67 : 551,497.60 = 218,348.70 : x - Step 2: Convert to fraction form
399,640.67/551,497.60 = 218,348.70/x - Step 3: Cross multiply
399,640.67x = 551,497.60 × 218,348.70 - Step 4: Simplify right side
399,640.67x = 120,418,784,013.12 - Step 5: Solve for x
x = 120,418,784,013.12/399,640.67 - Step 6: Final answer
x = 301,317.64
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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.