Finding the Fourth Proportional to 442,987.20, 664,480.80 and 253,252.80
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Solution
The fourth proportional to 442,987.20, 664,480.80 and 253,252.80 is: 379,879.20
Step by Step Solution
- Step 1: Write the proportion equation
442,987.20 : 664,480.80 = 253,252.80 : x - Step 2: Convert to fraction form
442,987.20/664,480.80 = 253,252.80/x - Step 3: Cross multiply
442,987.20x = 664,480.80 × 253,252.80 - Step 4: Simplify right side
442,987.20x = 168,281,623,146.24 - Step 5: Solve for x
x = 168,281,623,146.24/442,987.20 - Step 6: Final answer
x = 379,879.20
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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.