Finding the Fourth Proportional to 345,369.74, 518,407.97 and 285,206.58
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Solution
The fourth proportional to 345,369.74, 518,407.97 and 285,206.58 is: 428,101.68
Step by Step Solution
- Step 1: Write the proportion equation
345,369.74 : 518,407.97 = 285,206.58 : x - Step 2: Convert to fraction form
345,369.74/518,407.97 = 285,206.58/x - Step 3: Cross multiply
345,369.74x = 518,407.97 × 285,206.58 - Step 4: Simplify right side
345,369.74x = 147,853,362,742.41 - Step 5: Solve for x
x = 147,853,362,742.41/345,369.74 - Step 6: Final answer
x = 428,101.68
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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.