Finding the Fourth Proportional to 217,848.80, 326,821.80 and 84,717.20
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Solution
The fourth proportional to 217,848.80, 326,821.80 and 84,717.20 is: 127,094.70
Step by Step Solution
- Step 1: Write the proportion equation
217,848.80 : 326,821.80 = 84,717.20 : x - Step 2: Convert to fraction form
217,848.80/326,821.80 = 84,717.20/x - Step 3: Cross multiply
217,848.80x = 326,821.80 × 84,717.20 - Step 4: Simplify right side
217,848.80x = 27,687,427,794.96 - Step 5: Solve for x
x = 27,687,427,794.96/217,848.80 - Step 6: Final answer
x = 127,094.70
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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.