Finding the Fourth Proportional to 319,318.20, 478,977.30 and 283,375.80
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Solution
The fourth proportional to 319,318.20, 478,977.30 and 283,375.80 is: 425,063.70
Step by Step Solution
- Step 1: Write the proportion equation
319,318.20 : 478,977.30 = 283,375.80 : x - Step 2: Convert to fraction form
319,318.20/478,977.30 = 283,375.80/x - Step 3: Cross multiply
319,318.20x = 478,977.30 × 283,375.80 - Step 4: Simplify right side
319,318.20x = 135,730,575,569.34 - Step 5: Solve for x
x = 135,730,575,569.34/319,318.20 - Step 6: Final answer
x = 425,063.70
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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.