Finding the Fourth Proportional to 305,478.84, 458,364.06 and 147,619.56
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Solution
The fourth proportional to 305,478.84, 458,364.06 and 147,619.56 is: 221,499.80
Step by Step Solution
- Step 1: Write the proportion equation
305,478.84 : 458,364.06 = 147,619.56 : x - Step 2: Convert to fraction form
305,478.84/458,364.06 = 147,619.56/x - Step 3: Cross multiply
305,478.84x = 458,364.06 × 147,619.56 - Step 4: Simplify right side
305,478.84x = 67,663,500,857.01 - Step 5: Solve for x
x = 67,663,500,857.01/305,478.84 - Step 6: Final answer
x = 221,499.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.