Finding the Fourth Proportional to 345,827.66, 518,786.88 and 135,438.26
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Solution
The fourth proportional to 345,827.66, 518,786.88 and 135,438.26 is: 203,175.17
Step by Step Solution
- Step 1: Write the proportion equation
345,827.66 : 518,786.88 = 135,438.26 : x - Step 2: Convert to fraction form
345,827.66/518,786.88 = 135,438.26/x - Step 3: Cross multiply
345,827.66x = 518,786.88 × 135,438.26 - Step 4: Simplify right side
345,827.66x = 70,263,592,338.03 - Step 5: Solve for x
x = 70,263,592,338.03/345,827.66 - Step 6: Final answer
x = 203,175.17
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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.