Finding the Fourth Proportional to 421,865.30, 582,175.10 and 230,890.99
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Solution
The fourth proportional to 421,865.30, 582,175.10 and 230,890.99 is: 318,630.10
Step by Step Solution
- Step 1: Write the proportion equation
421,865.30 : 582,175.10 = 230,890.99 : x - Step 2: Convert to fraction form
421,865.30/582,175.10 = 230,890.99/x - Step 3: Cross multiply
421,865.30x = 582,175.10 × 230,890.99 - Step 4: Simplify right side
421,865.30x = 134,418,982,582.46 - Step 5: Solve for x
x = 134,418,982,582.46/421,865.30 - Step 6: Final answer
x = 318,630.10
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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.