Finding the Fourth Proportional to 219,175.70, 328,763.55 and 71,431.70
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Solution
The fourth proportional to 219,175.70, 328,763.55 and 71,431.70 is: 107,147.55
Step by Step Solution
- Step 1: Write the proportion equation
219,175.70 : 328,763.55 = 71,431.70 : x - Step 2: Convert to fraction form
219,175.70/328,763.55 = 71,431.70/x - Step 3: Cross multiply
219,175.70x = 328,763.55 × 71,431.70 - Step 4: Simplify right side
219,175.70x = 23,484,139,274.54 - Step 5: Solve for x
x = 23,484,139,274.54/219,175.70 - Step 6: Final answer
x = 107,147.55
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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.