Finding the Fourth Proportional to 355,459.97, 490,487.37 and 228,307.79
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Solution
The fourth proportional to 355,459.97, 490,487.37 and 228,307.79 is: 315,034.31
Step by Step Solution
- Step 1: Write the proportion equation
355,459.97 : 490,487.37 = 228,307.79 : x - Step 2: Convert to fraction form
355,459.97/490,487.37 = 228,307.79/x - Step 3: Cross multiply
355,459.97x = 490,487.37 × 228,307.79 - Step 4: Simplify right side
355,459.97x = 111,982,085,015.18 - Step 5: Solve for x
x = 111,982,085,015.18/355,459.97 - Step 6: Final answer
x = 315,034.31
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1.5x scale
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.