Finding the Fourth Proportional to 315,631.08, 435,563.87 and 172,391.63
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Solution
The fourth proportional to 315,631.08, 435,563.87 and 172,391.63 is: 237,896.61
Step by Step Solution
- Step 1: Write the proportion equation
315,631.08 : 435,563.87 = 172,391.63 : x - Step 2: Convert to fraction form
315,631.08/435,563.87 = 172,391.63/x - Step 3: Cross multiply
315,631.08x = 435,563.87 × 172,391.63 - Step 4: Simplify right side
315,631.08x = 75,087,562,478.63 - Step 5: Solve for x
x = 75,087,562,478.63/315,631.08 - Step 6: Final answer
x = 237,896.61
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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.