Finding the Fourth Proportional to 317,609.78, 438,302.24 and 174,379.05
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Solution
The fourth proportional to 317,609.78, 438,302.24 and 174,379.05 is: 240,643.50
Step by Step Solution
- Step 1: Write the proportion equation
317,609.78 : 438,302.24 = 174,379.05 : x - Step 2: Convert to fraction form
317,609.78/438,302.24 = 174,379.05/x - Step 3: Cross multiply
317,609.78x = 438,302.24 × 174,379.05 - Step 4: Simplify right side
317,609.78x = 76,430,727,352.18 - Step 5: Solve for x
x = 76,430,727,352.18/317,609.78 - Step 6: Final answer
x = 240,643.50
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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.