Finding the Fourth Proportional to 219,455.46, 302,979.05 and 138,951.99
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Solution
The fourth proportional to 219,455.46, 302,979.05 and 138,951.99 is: 191,836.38
Step by Step Solution
- Step 1: Write the proportion equation
219,455.46 : 302,979.05 = 138,951.99 : x - Step 2: Convert to fraction form
219,455.46/302,979.05 = 138,951.99/x - Step 3: Cross multiply
219,455.46x = 302,979.05 × 138,951.99 - Step 4: Simplify right side
219,455.46x = 42,099,541,231.05 - Step 5: Solve for x
x = 42,099,541,231.05/219,455.46 - Step 6: Final answer
x = 191,836.38
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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.