Finding the Fourth Proportional to 211,447.89, 291,811.41 and 139,702.14
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Solution
The fourth proportional to 211,447.89, 291,811.41 and 139,702.14 is: 192,797.75
Step by Step Solution
- Step 1: Write the proportion equation
211,447.89 : 291,811.41 = 139,702.14 : x - Step 2: Convert to fraction form
211,447.89/291,811.41 = 139,702.14/x - Step 3: Cross multiply
211,447.89x = 291,811.41 × 139,702.14 - Step 4: Simplify right side
211,447.89x = 40,766,678,453.42 - Step 5: Solve for x
x = 40,766,678,453.42/211,447.89 - Step 6: Final answer
x = 192,797.75
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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.