Finding the Fourth Proportional to 331,641.69, 457,609.50 and 186,428.13
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Solution
The fourth proportional to 331,641.69, 457,609.50 and 186,428.13 is: 257,239.32
Step by Step Solution
- Step 1: Write the proportion equation
331,641.69 : 457,609.50 = 186,428.13 : x - Step 2: Convert to fraction form
331,641.69/457,609.50 = 186,428.13/x - Step 3: Cross multiply
331,641.69x = 457,609.50 × 186,428.13 - Step 4: Simplify right side
331,641.69x = 85,311,283,355.24 - Step 5: Solve for x
x = 85,311,283,355.24/331,641.69 - Step 6: Final answer
x = 257,239.32
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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.