Finding the Fourth Proportional to 415,916.24, 623,809.08 and 135,431.12
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Solution
The fourth proportional to 415,916.24, 623,809.08 and 135,431.12 is: 203,125.42
Step by Step Solution
- Step 1: Write the proportion equation
415,916.24 : 623,809.08 = 135,431.12 : x - Step 2: Convert to fraction form
415,916.24/623,809.08 = 135,431.12/x - Step 3: Cross multiply
415,916.24x = 623,809.08 × 135,431.12 - Step 4: Simplify right side
415,916.24x = 84,483,162,370.57 - Step 5: Solve for x
x = 84,483,162,370.57/415,916.24 - Step 6: Final answer
x = 203,125.42
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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.