Finding the Fourth Proportional to 431,486.96, 647,356.68 and 221,271.92
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Solution
The fourth proportional to 431,486.96, 647,356.68 and 221,271.92 is: 331,972.62
Step by Step Solution
- Step 1: Write the proportion equation
431,486.96 : 647,356.68 = 221,271.92 : x - Step 2: Convert to fraction form
431,486.96/647,356.68 = 221,271.92/x - Step 3: Cross multiply
431,486.96x = 647,356.68 × 221,271.92 - Step 4: Simplify right side
431,486.96x = 143,241,855,508.43 - Step 5: Solve for x
x = 143,241,855,508.43/431,486.96 - Step 6: Final answer
x = 331,972.62
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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.