Finding the Fourth Proportional to 391,617.72, 587,382.84 and 138,877.07
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Solution
The fourth proportional to 391,617.72, 587,382.84 and 138,877.07 is: 208,300.09
Step by Step Solution
- Step 1: Write the proportion equation
391,617.72 : 587,382.84 = 138,877.07 : x - Step 2: Convert to fraction form
391,617.72/587,382.84 = 138,877.07/x - Step 3: Cross multiply
391,617.72x = 587,382.84 × 138,877.07 - Step 4: Simplify right side
391,617.72x = 81,574,004,850.56 - Step 5: Solve for x
x = 81,574,004,850.56/391,617.72 - Step 6: Final answer
x = 208,300.09
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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.