Finding the Fourth Proportional to 420,665.09, 580,490.79 and 229,678.02
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Solution
The fourth proportional to 420,665.09, 580,490.79 and 229,678.02 is: 316,940.91
Step by Step Solution
- Step 1: Write the proportion equation
420,665.09 : 580,490.79 = 229,678.02 : x - Step 2: Convert to fraction form
420,665.09/580,490.79 = 229,678.02/x - Step 3: Cross multiply
420,665.09x = 580,490.79 × 229,678.02 - Step 4: Simplify right side
420,665.09x = 133,325,975,275.44 - Step 5: Solve for x
x = 133,325,975,275.44/420,665.09 - Step 6: Final answer
x = 316,940.91
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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.