Finding the Fourth Proportional to 291,187,269.78, 401,848,348.48 and 172,211,850.08
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Solution
The fourth proportional to 291,187,269.78, 401,848,348.48 and 172,211,850.08 is: 237,658,217.66
Step by Step Solution
- Step 1: Write the proportion equation
291,187,269.78 : 401,848,348.48 = 172,211,850.08 : x - Step 2: Convert to fraction form
291,187,269.78/401,848,348.48 = 172,211,850.08/x - Step 3: Cross multiply
291,187,269.78x = 401,848,348.48 × 172,211,850.08 - Step 4: Simplify right side
291,187,269.78x = 69,203,047,540,984,888 - Step 5: Solve for x
x = 69,203,047,540,984,888/291,187,269.78 - Step 6: Final answer
x = 237,658,217.66
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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.