Finding the Fourth Proportional to 511,745.61, 767,289.94 and 212,432.79
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Solution
The fourth proportional to 511,745.61, 767,289.94 and 212,432.79 is: 318,512.83
Step by Step Solution
- Step 1: Write the proportion equation
511,745.61 : 767,289.94 = 212,432.79 : x - Step 2: Convert to fraction form
511,745.61/767,289.94 = 212,432.79/x - Step 3: Cross multiply
511,745.61x = 767,289.94 × 212,432.79 - Step 4: Simplify right side
511,745.61x = 162,997,542,693.13 - Step 5: Solve for x
x = 162,997,542,693.13/511,745.61 - Step 6: Final answer
x = 318,512.83
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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.