Finding the Fourth Proportional to 221,465.23, 305,617.75 and 120,863.95
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Solution
The fourth proportional to 221,465.23, 305,617.75 and 120,863.95 is: 166,789.92
Step by Step Solution
- Step 1: Write the proportion equation
221,465.23 : 305,617.75 = 120,863.95 : x - Step 2: Convert to fraction form
221,465.23/305,617.75 = 120,863.95/x - Step 3: Cross multiply
221,465.23x = 305,617.75 × 120,863.95 - Step 4: Simplify right side
221,465.23x = 36,938,168,455.11 - Step 5: Solve for x
x = 36,938,168,455.11/221,465.23 - Step 6: Final answer
x = 166,789.92
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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.