Finding the Fourth Proportional to 425,877.21, 638,028.49 and 215,011.53
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Solution
The fourth proportional to 425,877.21, 638,028.49 and 215,011.53 is: 322,119.80
Step by Step Solution
- Step 1: Write the proportion equation
425,877.21 : 638,028.49 = 215,011.53 : x - Step 2: Convert to fraction form
425,877.21/638,028.49 = 215,011.53/x - Step 3: Cross multiply
425,877.21x = 638,028.49 × 215,011.53 - Step 4: Simplify right side
425,877.21x = 137,183,481,818.49 - Step 5: Solve for x
x = 137,183,481,818.49/425,877.21 - Step 6: Final answer
x = 322,119.80
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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.