Finding the Fourth Proportional to 319,115.62, 478,717.17 and 141,618.70
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Solution
The fourth proportional to 319,115.62, 478,717.17 and 141,618.70 is: 212,447.46
Step by Step Solution
- Step 1: Write the proportion equation
319,115.62 : 478,717.17 = 141,618.70 : x - Step 2: Convert to fraction form
319,115.62/478,717.17 = 141,618.70/x - Step 3: Cross multiply
319,115.62x = 478,717.17 × 141,618.70 - Step 4: Simplify right side
319,115.62x = 67,795,303,283.08 - Step 5: Solve for x
x = 67,795,303,283.08/319,115.62 - Step 6: Final answer
x = 212,447.46
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1.5x scale
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.