Finding the Fourth Proportional to 399,350.39, 550,166.99 and 278,271.99
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Solution
The fourth proportional to 399,350.39, 550,166.99 and 278,271.99 is: 383,362.75
Step by Step Solution
- Step 1: Write the proportion equation
399,350.39 : 550,166.99 = 278,271.99 : x - Step 2: Convert to fraction form
399,350.39/550,166.99 = 278,271.99/x - Step 3: Cross multiply
399,350.39x = 550,166.99 × 278,271.99 - Step 4: Simplify right side
399,350.39x = 153,096,061,748.25 - Step 5: Solve for x
x = 153,096,061,748.25/399,350.39 - Step 6: Final answer
x = 383,362.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.