Finding the Fourth Proportional to 253,378.81, 349,638.94 and 171,540.58
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Solution
The fourth proportional to 253,378.81, 349,638.94 and 171,540.58 is: 236,709.88
Step by Step Solution
- Step 1: Write the proportion equation
253,378.81 : 349,638.94 = 171,540.58 : x - Step 2: Convert to fraction form
253,378.81/349,638.94 = 171,540.58/x - Step 3: Cross multiply
253,378.81x = 349,638.94 × 171,540.58 - Step 4: Simplify right side
253,378.81x = 59,977,266,558.19 - Step 5: Solve for x
x = 59,977,266,558.19/253,378.81 - Step 6: Final answer
x = 236,709.88
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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.