Finding the Fourth Proportional to 662,515.21, 993,563.61 and 213,135.94
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Solution
The fourth proportional to 662,515.21, 993,563.61 and 213,135.94 is: 319,636.61
Step by Step Solution
- Step 1: Write the proportion equation
662,515.21 : 993,563.61 = 213,135.94 : x - Step 2: Convert to fraction form
662,515.21/993,563.61 = 213,135.94/x - Step 3: Cross multiply
662,515.21x = 993,563.61 × 213,135.94 - Step 4: Simplify right side
662,515.21x = 211,764,113,967.14 - Step 5: Solve for x
x = 211,764,113,967.14/662,515.21 - Step 6: Final answer
x = 319,636.61
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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.