Finding the Fourth Proportional to 643,438.62, 965,165.13 and 194,163.75
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Solution
The fourth proportional to 643,438.62, 965,165.13 and 194,163.75 is: 291,247.80
Step by Step Solution
- Step 1: Write the proportion equation
643,438.62 : 965,165.13 = 194,163.75 : x - Step 2: Convert to fraction form
643,438.62/965,165.13 = 194,163.75/x - Step 3: Cross multiply
643,438.62x = 965,165.13 × 194,163.75 - Step 4: Simplify right side
643,438.62x = 187,400,081,010.04 - Step 5: Solve for x
x = 187,400,081,010.04/643,438.62 - Step 6: Final answer
x = 291,247.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.