Finding the Fourth Proportional to 287,701.20, 431,551.80 and 110,116.80
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Solution
The fourth proportional to 287,701.20, 431,551.80 and 110,116.80 is: 165,175.20
Step by Step Solution
- Step 1: Write the proportion equation
287,701.20 : 431,551.80 = 110,116.80 : x - Step 2: Convert to fraction form
287,701.20/431,551.80 = 110,116.80/x - Step 3: Cross multiply
287,701.20x = 431,551.80 × 110,116.80 - Step 4: Simplify right side
287,701.20x = 47,521,103,250.24 - Step 5: Solve for x
x = 47,521,103,250.24/287,701.20 - Step 6: Final answer
x = 165,175.20
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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.