Finding the Fourth Proportional to 420,859.70, 631,683.21 and 207,868.12
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Solution
The fourth proportional to 420,859.70, 631,683.21 and 207,868.12 is: 311,996.62
Step by Step Solution
- Step 1: Write the proportion equation
420,859.70 : 631,683.21 = 207,868.12 : x - Step 2: Convert to fraction form
420,859.70/631,683.21 = 207,868.12/x - Step 3: Cross multiply
420,859.70x = 631,683.21 × 207,868.12 - Step 4: Simplify right side
420,859.70x = 131,306,802,882.52 - Step 5: Solve for x
x = 131,306,802,882.52/420,859.70 - Step 6: Final answer
x = 311,996.62
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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.