Finding the Fourth Proportional to 399,560.21, 551,524.49 and 318,038.00
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Solution
The fourth proportional to 399,560.21, 551,524.49 and 318,038.00 is: 438,997.03
Step by Step Solution
- Step 1: Write the proportion equation
399,560.21 : 551,524.49 = 318,038.00 : x - Step 2: Convert to fraction form
399,560.21/551,524.49 = 318,038.00/x - Step 3: Cross multiply
399,560.21x = 551,524.49 × 318,038.00 - Step 4: Simplify right side
399,560.21x = 175,405,744,146.61 - Step 5: Solve for x
x = 175,405,744,146.61/399,560.21 - Step 6: Final answer
x = 438,997.03
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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.