Finding the Fourth Proportional to 423,865.38, 635,671.26 and 139,503.44
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Solution
The fourth proportional to 423,865.38, 635,671.26 and 139,503.44 is: 209,213.42
Step by Step Solution
- Step 1: Write the proportion equation
423,865.38 : 635,671.26 = 139,503.44 : x - Step 2: Convert to fraction form
423,865.38/635,671.26 = 139,503.44/x - Step 3: Cross multiply
423,865.38x = 635,671.26 × 139,503.44 - Step 4: Simplify right side
423,865.38x = 88,678,327,479.13 - Step 5: Solve for x
x = 88,678,327,479.13/423,865.38 - Step 6: Final answer
x = 209,213.42
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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.