Finding the Fourth Proportional to 217,985.20, 300,827.19 and 122,489.98
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Solution
The fourth proportional to 217,985.20, 300,827.19 and 122,489.98 is: 169,040.45
Step by Step Solution
- Step 1: Write the proportion equation
217,985.20 : 300,827.19 = 122,489.98 : x - Step 2: Convert to fraction form
217,985.20/300,827.19 = 122,489.98/x - Step 3: Cross multiply
217,985.20x = 300,827.19 × 122,489.98 - Step 4: Simplify right side
217,985.20x = 36,848,316,486.56 - Step 5: Solve for x
x = 36,848,316,486.56/217,985.20 - Step 6: Final answer
x = 169,040.45
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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.