Finding the Fourth Proportional to 438,205.70, 657,330.15 and 228,253.70
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Solution
The fourth proportional to 438,205.70, 657,330.15 and 228,253.70 is: 342,391.80
Step by Step Solution
- Step 1: Write the proportion equation
438,205.70 : 657,330.15 = 228,253.70 : x - Step 2: Convert to fraction form
438,205.70/657,330.15 = 228,253.70/x - Step 3: Cross multiply
438,205.70x = 657,330.15 × 228,253.70 - Step 4: Simplify right side
438,205.70x = 150,038,038,859.06 - Step 5: Solve for x
x = 150,038,038,859.06/438,205.70 - Step 6: Final answer
x = 342,391.80
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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.