Finding the Fourth Proportional to 915,161.44, 1,372,742.16 and 316,137.28
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Solution
The fourth proportional to 915,161.44, 1,372,742.16 and 316,137.28 is: 474,205.92
Step by Step Solution
- Step 1: Write the proportion equation
915,161.44 : 1,372,742.16 = 316,137.28 : x - Step 2: Convert to fraction form
915,161.44/1,372,742.16 = 316,137.28/x - Step 3: Cross multiply
915,161.44x = 1,372,742.16 × 316,137.28 - Step 4: Simplify right side
915,161.44x = 433,974,972,603.73 - Step 5: Solve for x
x = 433,974,972,603.73/915,161.44 - Step 6: Final answer
x = 474,205.92
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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.