Finding the Fourth Proportional to 251,963.78, 347,704.79 and 137,243.70
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Solution
The fourth proportional to 251,963.78, 347,704.79 and 137,243.70 is: 189,393.46
Step by Step Solution
- Step 1: Write the proportion equation
251,963.78 : 347,704.79 = 137,243.70 : x - Step 2: Convert to fraction form
251,963.78/347,704.79 = 137,243.70/x - Step 3: Cross multiply
251,963.78x = 347,704.79 × 137,243.70 - Step 4: Simplify right side
251,963.78x = 47,720,291,201.10 - Step 5: Solve for x
x = 47,720,291,201.10/251,963.78 - Step 6: Final answer
x = 189,393.46
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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.