Finding the Fourth Proportional to 305,869.99, 421,930.56 and 284,220.58
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Solution
The fourth proportional to 305,869.99, 421,930.56 and 284,220.58 is: 392,066.41
Step by Step Solution
- Step 1: Write the proportion equation
305,869.99 : 421,930.56 = 284,220.58 : x - Step 2: Convert to fraction form
305,869.99/421,930.56 = 284,220.58/x - Step 3: Cross multiply
305,869.99x = 421,930.56 × 284,220.58 - Step 4: Simplify right side
305,869.99x = 119,921,348,482.93 - Step 5: Solve for x
x = 119,921,348,482.93/305,869.99 - Step 6: Final answer
x = 392,066.41
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.