Finding the Fourth Proportional to 288,048.80, 431,878.80 and 153,135.20
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Solution
The fourth proportional to 288,048.80, 431,878.80 and 153,135.20 is: 229,599.45
Step by Step Solution
- Step 1: Write the proportion equation
288,048.80 : 431,878.80 = 153,135.20 : x - Step 2: Convert to fraction form
288,048.80/431,878.80 = 153,135.20/x - Step 3: Cross multiply
288,048.80x = 431,878.80 × 153,135.20 - Step 4: Simplify right side
288,048.80x = 66,135,846,413.76 - Step 5: Solve for x
x = 66,135,846,413.76/288,048.80 - Step 6: Final answer
x = 229,599.45
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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.