Finding the Fourth Proportional to 397,936.81, 549,163.43 and 216,656.38
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Solution
The fourth proportional to 397,936.81, 549,163.43 and 216,656.38 is: 298,991.59
Step by Step Solution
- Step 1: Write the proportion equation
397,936.81 : 549,163.43 = 216,656.38 : x - Step 2: Convert to fraction form
397,936.81/549,163.43 = 216,656.38/x - Step 3: Cross multiply
397,936.81x = 549,163.43 × 216,656.38 - Step 4: Simplify right side
397,936.81x = 118,979,760,772.18 - Step 5: Solve for x
x = 118,979,760,772.18/397,936.81 - Step 6: Final answer
x = 298,991.59
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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.