Finding the Fourth Proportional to 328,987.60, 493,135.80 and 129,230.80
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Solution
The fourth proportional to 328,987.60, 493,135.80 and 129,230.80 is: 193,710.44
Step by Step Solution
- Step 1: Write the proportion equation
328,987.60 : 493,135.80 = 129,230.80 : x - Step 2: Convert to fraction form
328,987.60/493,135.80 = 129,230.80/x - Step 3: Cross multiply
328,987.60x = 493,135.80 × 129,230.80 - Step 4: Simplify right side
328,987.60x = 63,728,333,942.64 - Step 5: Solve for x
x = 63,728,333,942.64/328,987.60 - Step 6: Final answer
x = 193,710.44
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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.