Finding the Fourth Proportional to 428,006.97, 642,015.99 and 203,389.38
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Solution
The fourth proportional to 428,006.97, 642,015.99 and 203,389.38 is: 305,086.70
Step by Step Solution
- Step 1: Write the proportion equation
428,006.97 : 642,015.99 = 203,389.38 : x - Step 2: Convert to fraction form
428,006.97/642,015.99 = 203,389.38/x - Step 3: Cross multiply
428,006.97x = 642,015.99 × 203,389.38 - Step 4: Simplify right side
428,006.97x = 130,579,234,156.19 - Step 5: Solve for x
x = 130,579,234,156.19/428,006.97 - Step 6: Final answer
x = 305,086.70
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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.