Finding the Fourth Proportional to 288,555.97, 432,855.71 and 86,136.09
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Solution
The fourth proportional to 288,555.97, 432,855.71 and 86,136.09 is: 129,210.63
Step by Step Solution
- Step 1: Write the proportion equation
288,555.97 : 432,855.71 = 86,136.09 : x - Step 2: Convert to fraction form
288,555.97/432,855.71 = 86,136.09/x - Step 3: Cross multiply
288,555.97x = 432,855.71 × 86,136.09 - Step 4: Simplify right side
288,555.97x = 37,284,498,393.57 - Step 5: Solve for x
x = 37,284,498,393.57/288,555.97 - Step 6: Final answer
x = 129,210.63
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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.