Finding the Fourth Proportional to 438,053.70, 656,821.35 and 228,101.70
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Solution
The fourth proportional to 438,053.70, 656,821.35 and 228,101.70 is: 342,017.58
Step by Step Solution
- Step 1: Write the proportion equation
438,053.70 : 656,821.35 = 228,101.70 : x - Step 2: Convert to fraction form
438,053.70/656,821.35 = 228,101.70/x - Step 3: Cross multiply
438,053.70x = 656,821.35 × 228,101.70 - Step 4: Simplify right side
438,053.70x = 149,822,066,531.30 - Step 5: Solve for x
x = 149,822,066,531.30/438,053.70 - Step 6: Final answer
x = 342,017.58
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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.