Finding the Fourth Proportional to 318,003.72, 438,840.09 and 174,760.70
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Solution
The fourth proportional to 318,003.72, 438,840.09 and 174,760.70 is: 241,166.99
Step by Step Solution
- Step 1: Write the proportion equation
318,003.72 : 438,840.09 = 174,760.70 : x - Step 2: Convert to fraction form
318,003.72/438,840.09 = 174,760.70/x - Step 3: Cross multiply
318,003.72x = 438,840.09 × 174,760.70 - Step 4: Simplify right side
318,003.72x = 76,691,999,122.26 - Step 5: Solve for x
x = 76,691,999,122.26/318,003.72 - Step 6: Final answer
x = 241,166.99
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1.5x scale
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.