Finding the Fourth Proportional to 386,939.42, 580,408.36 and 102,658.47
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Solution
The fourth proportional to 386,939.42, 580,408.36 and 102,658.47 is: 153,987.50
Step by Step Solution
- Step 1: Write the proportion equation
386,939.42 : 580,408.36 = 102,658.47 : x - Step 2: Convert to fraction form
386,939.42/580,408.36 = 102,658.47/x - Step 3: Cross multiply
386,939.42x = 580,408.36 × 102,658.47 - Step 4: Simplify right side
386,939.42x = 59,583,832,399.03 - Step 5: Solve for x
x = 59,583,832,399.03/386,939.42 - Step 6: Final answer
x = 153,987.50
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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.