Finding the Fourth Proportional to 251,608.36, 347,220.12 and 138,438.40
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Solution
The fourth proportional to 251,608.36, 347,220.12 and 138,438.40 is: 191,045.31
Step by Step Solution
- Step 1: Write the proportion equation
251,608.36 : 347,220.12 = 138,438.40 : x - Step 2: Convert to fraction form
251,608.36/347,220.12 = 138,438.40/x - Step 3: Cross multiply
251,608.36x = 347,220.12 × 138,438.40 - Step 4: Simplify right side
251,608.36x = 48,068,597,860.61 - Step 5: Solve for x
x = 48,068,597,860.61/251,608.36 - Step 6: Final answer
x = 191,045.31
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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.