Finding the Fourth Proportional to 285,234.36, 393,607.76 and 156,147.84
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Solution
The fourth proportional to 285,234.36, 393,607.76 and 156,147.84 is: 215,475.45
Step by Step Solution
- Step 1: Write the proportion equation
285,234.36 : 393,607.76 = 156,147.84 : x - Step 2: Convert to fraction form
285,234.36/393,607.76 = 156,147.84/x - Step 3: Cross multiply
285,234.36x = 393,607.76 × 156,147.84 - Step 4: Simplify right side
285,234.36x = 61,461,001,531.24 - Step 5: Solve for x
x = 61,461,001,531.24/285,234.36 - Step 6: Final answer
x = 215,475.45
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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.