Finding the Fourth Proportional to 217,202.72, 299,747.86 and 121,705.88
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Solution
The fourth proportional to 217,202.72, 299,747.86 and 121,705.88 is: 167,958.65
Step by Step Solution
- Step 1: Write the proportion equation
217,202.72 : 299,747.86 = 121,705.88 : x - Step 2: Convert to fraction form
217,202.72/299,747.86 = 121,705.88/x - Step 3: Cross multiply
217,202.72x = 299,747.86 × 121,705.88 - Step 4: Simplify right side
217,202.72x = 36,481,075,276.41 - Step 5: Solve for x
x = 36,481,075,276.41/217,202.72 - Step 6: Final answer
x = 167,958.65
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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.