Finding the Fourth Proportional to 315,004.68, 471,981.12 and 221,342.76
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Solution
The fourth proportional to 315,004.68, 471,981.12 and 221,342.76 is: 331,644.61
Step by Step Solution
- Step 1: Write the proportion equation
315,004.68 : 471,981.12 = 221,342.76 : x - Step 2: Convert to fraction form
315,004.68/471,981.12 = 221,342.76/x - Step 3: Cross multiply
315,004.68x = 471,981.12 × 221,342.76 - Step 4: Simplify right side
315,004.68x = 104,469,603,768.69 - Step 5: Solve for x
x = 104,469,603,768.69/315,004.68 - Step 6: Final answer
x = 331,644.61
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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.