Finding the Fourth Proportional to 421,006.20, 631,083.68 and 181,276.44
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Solution
The fourth proportional to 421,006.20, 631,083.68 and 181,276.44 is: 271,731.39
Step by Step Solution
- Step 1: Write the proportion equation
421,006.20 : 631,083.68 = 181,276.44 : x - Step 2: Convert to fraction form
421,006.20/631,083.68 = 181,276.44/x - Step 3: Cross multiply
421,006.20x = 631,083.68 × 181,276.44 - Step 4: Simplify right side
421,006.20x = 114,400,599,697.08 - Step 5: Solve for x
x = 114,400,599,697.08/421,006.20 - Step 6: Final answer
x = 271,731.39
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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.