Finding the Fourth Proportional to 412,314.50, 618,545.58 and 212,581.28
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Solution
The fourth proportional to 412,314.50, 618,545.58 and 212,581.28 is: 318,909.99
Step by Step Solution
- Step 1: Write the proportion equation
412,314.50 : 618,545.58 = 212,581.28 : x - Step 2: Convert to fraction form
412,314.50/618,545.58 = 212,581.28/x - Step 3: Cross multiply
412,314.50x = 618,545.58 × 212,581.28 - Step 4: Simplify right side
412,314.50x = 131,491,211,134.74 - Step 5: Solve for x
x = 131,491,211,134.74/412,314.50 - Step 6: Final answer
x = 318,909.99
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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.