Finding the Fourth Proportional to 538,148.09, 742,676.36 and 308,703.84
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Solution
The fourth proportional to 538,148.09, 742,676.36 and 308,703.84 is: 426,029.65
Step by Step Solution
- Step 1: Write the proportion equation
538,148.09 : 742,676.36 = 308,703.84 : x - Step 2: Convert to fraction form
538,148.09/742,676.36 = 308,703.84/x - Step 3: Cross multiply
538,148.09x = 742,676.36 × 308,703.84 - Step 4: Simplify right side
538,148.09x = 229,267,042,665.70 - Step 5: Solve for x
x = 229,267,042,665.70/538,148.09 - Step 6: Final answer
x = 426,029.65
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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.