Finding the Fourth Proportional to 326,432.53, 489,592.39 and 86,548.09
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Solution
The fourth proportional to 326,432.53, 489,592.39 and 86,548.09 is: 129,807.18
Step by Step Solution
- Step 1: Write the proportion equation
326,432.53 : 489,592.39 = 86,548.09 : x - Step 2: Convert to fraction form
326,432.53/489,592.39 = 86,548.09/x - Step 3: Cross multiply
326,432.53x = 489,592.39 × 86,548.09 - Step 4: Simplify right side
326,432.53x = 42,373,286,233.04 - Step 5: Solve for x
x = 42,373,286,233.04/326,432.53 - Step 6: Final answer
x = 129,807.18
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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.