Finding the Fourth Proportional to 487,728.60, 731,579.15 and 132,745.70
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Solution
The fourth proportional to 487,728.60, 731,579.15 and 132,745.70 is: 199,114.80
Step by Step Solution
- Step 1: Write the proportion equation
487,728.60 : 731,579.15 = 132,745.70 : x - Step 2: Convert to fraction form
487,728.60/731,579.15 = 132,745.70/x - Step 3: Cross multiply
487,728.60x = 731,579.15 × 132,745.70 - Step 4: Simplify right side
487,728.60x = 97,113,982,714.26 - Step 5: Solve for x
x = 97,113,982,714.26/487,728.60 - Step 6: Final answer
x = 199,114.80
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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.