Finding the Fourth Proportional to 287,608,840.80, 431,413,261.20 and 199,602,211.20
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Solution
The fourth proportional to 287,608,840.80, 431,413,261.20 and 199,602,211.20 is: 299,403,316.80
Step by Step Solution
- Step 1: Write the proportion equation
287,608,840.80 : 431,413,261.20 = 199,602,211.20 : x - Step 2: Convert to fraction form
287,608,840.80/431,413,261.20 = 199,602,211.20/x - Step 3: Cross multiply
287,608,840.80x = 431,413,261.20 × 199,602,211.20 - Step 4: Simplify right side
287,608,840.80x = 86,111,040,876,523,152 - Step 5: Solve for x
x = 86,111,040,876,523,152/287,608,840.80 - Step 6: Final answer
x = 299,403,316.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.