Finding the Fourth Proportional to 317,930.13, 438,751.49 and 172,735.96
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Solution
The fourth proportional to 317,930.13, 438,751.49 and 172,735.96 is: 238,379.91
Step by Step Solution
- Step 1: Write the proportion equation
317,930.13 : 438,751.49 = 172,735.96 : x - Step 2: Convert to fraction form
317,930.13/438,751.49 = 172,735.96/x - Step 3: Cross multiply
317,930.13x = 438,751.49 × 172,735.96 - Step 4: Simplify right side
317,930.13x = 75,788,156,769.14 - Step 5: Solve for x
x = 75,788,156,769.14/317,930.13 - Step 6: Final answer
x = 238,379.91
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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.