Finding the Fourth Proportional to 320,721.64, 442,589.22 and 177,473.08
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Solution
The fourth proportional to 320,721.64, 442,589.22 and 177,473.08 is: 244,909.17
Step by Step Solution
- Step 1: Write the proportion equation
320,721.64 : 442,589.22 = 177,473.08 : x - Step 2: Convert to fraction form
320,721.64/442,589.22 = 177,473.08/x - Step 3: Cross multiply
320,721.64x = 442,589.22 × 177,473.08 - Step 4: Simplify right side
320,721.64x = 78,547,672,048.20 - Step 5: Solve for x
x = 78,547,672,048.20/320,721.64 - Step 6: Final answer
x = 244,909.17
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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.