Finding the Fourth Proportional to 385,378.36, 578,155.38 and 207,881.44
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Solution
The fourth proportional to 385,378.36, 578,155.38 and 207,881.44 is: 311,869.54
Step by Step Solution
- Step 1: Write the proportion equation
385,378.36 : 578,155.38 = 207,881.44 : x - Step 2: Convert to fraction form
385,378.36/578,155.38 = 207,881.44/x - Step 3: Cross multiply
385,378.36x = 578,155.38 × 207,881.44 - Step 4: Simplify right side
385,378.36x = 120,187,772,938.15 - Step 5: Solve for x
x = 120,187,772,938.15/385,378.36 - Step 6: Final answer
x = 311,869.54
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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.