Finding the Fourth Proportional to 305,431.13, 421,545.53 and 169,508.74
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Solution
The fourth proportional to 305,431.13, 421,545.53 and 169,508.74 is: 233,950.12
Step by Step Solution
- Step 1: Write the proportion equation
305,431.13 : 421,545.53 = 169,508.74 : x - Step 2: Convert to fraction form
305,431.13/421,545.53 = 169,508.74/x - Step 3: Cross multiply
305,431.13x = 421,545.53 × 169,508.74 - Step 4: Simplify right side
305,431.13x = 71,455,648,687.66 - Step 5: Solve for x
x = 71,455,648,687.66/305,431.13 - Step 6: Final answer
x = 233,950.12
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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.