Finding the Fourth Proportional to 399,170.18, 550,859.99 and 217,887.32
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Solution
The fourth proportional to 399,170.18, 550,859.99 and 217,887.32 is: 300,687.30
Step by Step Solution
- Step 1: Write the proportion equation
399,170.18 : 550,859.99 = 217,887.32 : x - Step 2: Convert to fraction form
399,170.18/550,859.99 = 217,887.32/x - Step 3: Cross multiply
399,170.18x = 550,859.99 × 217,887.32 - Step 4: Simplify right side
399,170.18x = 120,025,403,072.59 - Step 5: Solve for x
x = 120,025,403,072.59/399,170.18 - Step 6: Final answer
x = 300,687.30
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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.