Finding the Fourth Proportional to 287,911.84, 431,930.94 and 88,247.26
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Solution
The fourth proportional to 287,911.84, 431,930.94 and 88,247.26 is: 132,390.26
Step by Step Solution
- Step 1: Write the proportion equation
287,911.84 : 431,930.94 = 88,247.26 : x - Step 2: Convert to fraction form
287,911.84/431,930.94 = 88,247.26/x - Step 3: Cross multiply
287,911.84x = 431,930.94 × 88,247.26 - Step 4: Simplify right side
287,911.84x = 38,116,721,964.22 - Step 5: Solve for x
x = 38,116,721,964.22/287,911.84 - Step 6: Final answer
x = 132,390.26
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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.