Finding the Fourth Proportional to 438,840.70, 658,283.86 and 139,344.75
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Solution
The fourth proportional to 438,840.70, 658,283.86 and 139,344.75 is: 209,024.37
Step by Step Solution
- Step 1: Write the proportion equation
438,840.70 : 658,283.86 = 139,344.75 : x - Step 2: Convert to fraction form
438,840.70/658,283.86 = 139,344.75/x - Step 3: Cross multiply
438,840.70x = 658,283.86 × 139,344.75 - Step 4: Simplify right side
438,840.70x = 91,728,399,900.74 - Step 5: Solve for x
x = 91,728,399,900.74/438,840.70 - Step 6: Final answer
x = 209,024.37
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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.