Finding the Fourth Proportional to 319,135.62, 478,747.20 and 141,638.70
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Solution
The fourth proportional to 319,135.62, 478,747.20 and 141,638.70 is: 212,477.48
Step by Step Solution
- Step 1: Write the proportion equation
319,135.62 : 478,747.20 = 141,638.70 : x - Step 2: Convert to fraction form
319,135.62/478,747.20 = 141,638.70/x - Step 3: Cross multiply
319,135.62x = 478,747.20 × 141,638.70 - Step 4: Simplify right side
319,135.62x = 67,809,131,036.64 - Step 5: Solve for x
x = 67,809,131,036.64/319,135.62 - Step 6: Final answer
x = 212,477.48
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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.