Finding the Fourth Proportional to 438,311.70, 657,489.15 and 228,359.70
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Solution
The fourth proportional to 438,311.70, 657,489.15 and 228,359.70 is: 342,550.80
Step by Step Solution
- Step 1: Write the proportion equation
438,311.70 : 657,489.15 = 228,359.70 : x - Step 2: Convert to fraction form
438,311.70/657,489.15 = 228,359.70/x - Step 3: Cross multiply
438,311.70x = 657,489.15 × 228,359.70 - Step 4: Simplify right side
438,311.70x = 150,144,025,047.26 - Step 5: Solve for x
x = 150,144,025,047.26/438,311.70 - Step 6: Final answer
x = 342,550.80
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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.