Finding the Fourth Proportional to 419,134.92, 628,702.58 and 138,652.17
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Solution
The fourth proportional to 419,134.92, 628,702.58 and 138,652.17 is: 207,978.32
Step by Step Solution
- Step 1: Write the proportion equation
419,134.92 : 628,702.58 = 138,652.17 : x - Step 2: Convert to fraction form
419,134.92/628,702.58 = 138,652.17/x - Step 3: Cross multiply
419,134.92x = 628,702.58 × 138,652.17 - Step 4: Simplify right side
419,134.92x = 87,170,977,348.23 - Step 5: Solve for x
x = 87,170,977,348.23/419,134.92 - Step 6: Final answer
x = 207,978.32
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.