Finding the Fourth Proportional to 311,985.30, 430,539.74 and 168,745.35
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Solution
The fourth proportional to 311,985.30, 430,539.74 and 168,745.35 is: 232,868.60
Step by Step Solution
- Step 1: Write the proportion equation
311,985.30 : 430,539.74 = 168,745.35 : x - Step 2: Convert to fraction form
311,985.30/430,539.74 = 168,745.35/x - Step 3: Cross multiply
311,985.30x = 430,539.74 × 168,745.35 - Step 4: Simplify right side
311,985.30x = 72,651,579,115.21 - Step 5: Solve for x
x = 72,651,579,115.21/311,985.30 - Step 6: Final answer
x = 232,868.60
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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.