Finding the Fourth Proportional to 287,135.49, 396,239.98 and 158,072.93
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Solution
The fourth proportional to 287,135.49, 396,239.98 and 158,072.93 is: 218,136.79
Step by Step Solution
- Step 1: Write the proportion equation
287,135.49 : 396,239.98 = 158,072.93 : x - Step 2: Convert to fraction form
287,135.49/396,239.98 = 158,072.93/x - Step 3: Cross multiply
287,135.49x = 396,239.98 × 158,072.93 - Step 4: Simplify right side
287,135.49x = 62,634,812,913.22 - Step 5: Solve for x
x = 62,634,812,913.22/287,135.49 - Step 6: Final answer
x = 218,136.79
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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.