Finding the Fourth Proportional to 299,397.20, 449,095.80 and 121,812.80
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Solution
The fourth proportional to 299,397.20, 449,095.80 and 121,812.80 is: 182,719.20
Step by Step Solution
- Step 1: Write the proportion equation
299,397.20 : 449,095.80 = 121,812.80 : x - Step 2: Convert to fraction form
299,397.20/449,095.80 = 121,812.80/x - Step 3: Cross multiply
299,397.20x = 449,095.80 × 121,812.80 - Step 4: Simplify right side
299,397.20x = 54,705,616,866.24 - Step 5: Solve for x
x = 54,705,616,866.24/299,397.20 - Step 6: Final answer
x = 182,719.20
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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.