Finding the Fourth Proportional to 253,491.82, 349,815.71 and 138,769.09
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Solution
The fourth proportional to 253,491.82, 349,815.71 and 138,769.09 is: 191,499.70
Step by Step Solution
- Step 1: Write the proportion equation
253,491.82 : 349,815.71 = 138,769.09 : x - Step 2: Convert to fraction form
253,491.82/349,815.71 = 138,769.09/x - Step 3: Cross multiply
253,491.82x = 349,815.71 × 138,769.09 - Step 4: Simplify right side
253,491.82x = 48,543,605,301.48 - Step 5: Solve for x
x = 48,543,605,301.48/253,491.82 - Step 6: Final answer
x = 191,499.70
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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.