Finding the Fourth Proportional to 311,985.14, 430,539.52 and 168,745.19
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Solution
The fourth proportional to 311,985.14, 430,539.52 and 168,745.19 is: 232,868.38
Step by Step Solution
- Step 1: Write the proportion equation
311,985.14 : 430,539.52 = 168,745.19 : x - Step 2: Convert to fraction form
311,985.14/430,539.52 = 168,745.19/x - Step 3: Cross multiply
311,985.14x = 430,539.52 × 168,745.19 - Step 4: Simplify right side
311,985.14x = 72,651,473,104.91 - Step 5: Solve for x
x = 72,651,473,104.91/311,985.14 - Step 6: Final answer
x = 232,868.38
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1.5x scale
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.