Finding the Fourth Proportional to 429,453.13, 643,979.70 and 159,393.19
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Solution
The fourth proportional to 429,453.13, 643,979.70 and 159,393.19 is: 239,015.56
Step by Step Solution
- Step 1: Write the proportion equation
429,453.13 : 643,979.70 = 159,393.19 : x - Step 2: Convert to fraction form
429,453.13/643,979.70 = 159,393.19/x - Step 3: Cross multiply
429,453.13x = 643,979.70 × 159,393.19 - Step 4: Simplify right side
429,453.13x = 102,645,978,678.24 - Step 5: Solve for x
x = 102,645,978,678.24/429,453.13 - Step 6: Final answer
x = 239,015.56
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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.