Finding the Fourth Proportional to 429,511.20, 644,266.80 and 219,121.80
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Solution
The fourth proportional to 429,511.20, 644,266.80 and 219,121.80 is: 328,682.70
Step by Step Solution
- Step 1: Write the proportion equation
429,511.20 : 644,266.80 = 219,121.80 : x - Step 2: Convert to fraction form
429,511.20/644,266.80 = 219,121.80/x - Step 3: Cross multiply
429,511.20x = 644,266.80 × 219,121.80 - Step 4: Simplify right side
429,511.20x = 141,172,900,896.24 - Step 5: Solve for x
x = 141,172,900,896.24/429,511.20 - Step 6: Final answer
x = 328,682.70
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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.