Finding the Fourth Proportional to 287,657.19, 431,610.35 and 154,381.76
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Solution
The fourth proportional to 287,657.19, 431,610.35 and 154,381.76 is: 231,639.48
Step by Step Solution
- Step 1: Write the proportion equation
287,657.19 : 431,610.35 = 154,381.76 : x - Step 2: Convert to fraction form
287,657.19/431,610.35 = 154,381.76/x - Step 3: Cross multiply
287,657.19x = 431,610.35 × 154,381.76 - Step 4: Simplify right side
287,657.19x = 66,632,762,537.26 - Step 5: Solve for x
x = 66,632,762,537.26/287,657.19 - Step 6: Final answer
x = 231,639.48
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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.