Finding the Fourth Proportional to 320,855.68, 442,784.12 and 177,612.65
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Solution
The fourth proportional to 320,855.68, 442,784.12 and 177,612.65 is: 245,107.27
Step by Step Solution
- Step 1: Write the proportion equation
320,855.68 : 442,784.12 = 177,612.65 : x - Step 2: Convert to fraction form
320,855.68/442,784.12 = 177,612.65/x - Step 3: Cross multiply
320,855.68x = 442,784.12 × 177,612.65 - Step 4: Simplify right side
320,855.68x = 78,644,060,488.65 - Step 5: Solve for x
x = 78,644,060,488.65/320,855.68 - Step 6: Final answer
x = 245,107.27
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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.