Finding the Fourth Proportional to 478,163.87, 716,912.90 and 211,779.98
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Solution
The fourth proportional to 478,163.87, 716,912.90 and 211,779.98 is: 317,522.53
Step by Step Solution
- Step 1: Write the proportion equation
478,163.87 : 716,912.90 = 211,779.98 : x - Step 2: Convert to fraction form
478,163.87/716,912.90 = 211,779.98/x - Step 3: Cross multiply
478,163.87x = 716,912.90 × 211,779.98 - Step 4: Simplify right side
478,163.87x = 151,827,799,623.74 - Step 5: Solve for x
x = 151,827,799,623.74/478,163.87 - Step 6: Final answer
x = 317,522.53
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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.