Finding the Fourth Proportional to 425,876.21, 638,026.99 and 215,010.53
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Solution
The fourth proportional to 425,876.21, 638,026.99 and 215,010.53 is: 322,118.30
Step by Step Solution
- Step 1: Write the proportion equation
425,876.21 : 638,026.99 = 215,010.53 : x - Step 2: Convert to fraction form
425,876.21/638,026.99 = 215,010.53/x - Step 3: Cross multiply
425,876.21x = 638,026.99 × 215,010.53 - Step 4: Simplify right side
425,876.21x = 137,182,517,546.54 - Step 5: Solve for x
x = 137,182,517,546.54/425,876.21 - Step 6: Final answer
x = 322,118.30
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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.