Finding the Fourth Proportional to 378,491.98, 567,770.76 and 138,671.02
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Solution
The fourth proportional to 378,491.98, 567,770.76 and 138,671.02 is: 208,018.54
Step by Step Solution
- Step 1: Write the proportion equation
378,491.98 : 567,770.76 = 138,671.02 : x - Step 2: Convert to fraction form
378,491.98/567,770.76 = 138,671.02/x - Step 3: Cross multiply
378,491.98x = 567,770.76 × 138,671.02 - Step 4: Simplify right side
378,491.98x = 78,733,350,415.38 - Step 5: Solve for x
x = 78,733,350,415.38/378,491.98 - Step 6: Final answer
x = 208,018.54
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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.