Finding the Fourth Proportional to 390,940.38, 585,304.74 and 248,432.42
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Solution
The fourth proportional to 390,940.38, 585,304.74 and 248,432.42 is: 371,945.90
Step by Step Solution
- Step 1: Write the proportion equation
390,940.38 : 585,304.74 = 248,432.42 : x - Step 2: Convert to fraction form
390,940.38/585,304.74 = 248,432.42/x - Step 3: Cross multiply
390,940.38x = 585,304.74 × 248,432.42 - Step 4: Simplify right side
390,940.38x = 145,408,670,069.15 - Step 5: Solve for x
x = 145,408,670,069.15/390,940.38 - Step 6: Final answer
x = 371,945.90
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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.