Finding the Fourth Proportional to 288,631.12, 432,763.28 and 253,163.67
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Solution
The fourth proportional to 288,631.12, 432,763.28 and 253,163.67 is: 379,584.64
Step by Step Solution
- Step 1: Write the proportion equation
288,631.12 : 432,763.28 = 253,163.67 : x - Step 2: Convert to fraction form
288,631.12/432,763.28 = 253,163.67/x - Step 3: Cross multiply
288,631.12x = 432,763.28 × 253,163.67 - Step 4: Simplify right side
288,631.12x = 109,559,938,042.22 - Step 5: Solve for x
x = 109,559,938,042.22/288,631.12 - Step 6: Final answer
x = 379,584.64
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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.