Finding the Fourth Proportional to 305,405.57, 421,479.62 and 176,349.49
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Solution
The fourth proportional to 305,405.57, 421,479.62 and 176,349.49 is: 243,373.80
Step by Step Solution
- Step 1: Write the proportion equation
305,405.57 : 421,479.62 = 176,349.49 : x - Step 2: Convert to fraction form
305,405.57/421,479.62 = 176,349.49/x - Step 3: Cross multiply
305,405.57x = 421,479.62 × 176,349.49 - Step 4: Simplify right side
305,405.57x = 74,327,715,419.57 - Step 5: Solve for x
x = 74,327,715,419.57/305,405.57 - Step 6: Final answer
x = 243,373.80
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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.