Finding the Fourth Proportional to 422,916.65, 634,446.08 and 209,695.09
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Solution
The fourth proportional to 422,916.65, 634,446.08 and 209,695.09 is: 314,577.89
Step by Step Solution
- Step 1: Write the proportion equation
422,916.65 : 634,446.08 = 209,695.09 : x - Step 2: Convert to fraction form
422,916.65/634,446.08 = 209,695.09/x - Step 3: Cross multiply
422,916.65x = 634,446.08 × 209,695.09 - Step 4: Simplify right side
422,916.65x = 133,040,227,845.75 - Step 5: Solve for x
x = 133,040,227,845.75/422,916.65 - Step 6: Final answer
x = 314,577.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.