Finding the Fourth Proportional to 311,896.13, 430,417.11 and 168,656.18
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Solution
The fourth proportional to 311,896.13, 430,417.11 and 168,656.18 is: 232,745.77
Step by Step Solution
- Step 1: Write the proportion equation
311,896.13 : 430,417.11 = 168,656.18 : x - Step 2: Convert to fraction form
311,896.13/430,417.11 = 168,656.18/x - Step 3: Cross multiply
311,896.13x = 430,417.11 × 168,656.18 - Step 4: Simplify right side
311,896.13x = 72,592,503,427.15 - Step 5: Solve for x
x = 72,592,503,427.15/311,896.13 - Step 6: Final answer
x = 232,745.77
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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.