Finding the Fourth Proportional to 239,415.20, 358,431.60 and 146,103.20
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Solution
The fourth proportional to 239,415.20, 358,431.60 and 146,103.20 is: 218,732.99
Step by Step Solution
- Step 1: Write the proportion equation
239,415.20 : 358,431.60 = 146,103.20 : x - Step 2: Convert to fraction form
239,415.20/358,431.60 = 146,103.20/x - Step 3: Cross multiply
239,415.20x = 358,431.60 × 146,103.20 - Step 4: Simplify right side
239,415.20x = 52,368,003,741.12 - Step 5: Solve for x
x = 52,368,003,741.12/239,415.20 - Step 6: Final answer
x = 218,732.99
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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.