Finding the Fourth Proportional to 420,621.12, 580,458.24 and 229,636.08
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Solution
The fourth proportional to 420,621.12, 580,458.24 and 229,636.08 is: 316,898.39
Step by Step Solution
- Step 1: Write the proportion equation
420,621.12 : 580,458.24 = 229,636.08 : x - Step 2: Convert to fraction form
420,621.12/580,458.24 = 229,636.08/x - Step 3: Cross multiply
420,621.12x = 580,458.24 × 229,636.08 - Step 4: Simplify right side
420,621.12x = 133,294,154,837.30 - Step 5: Solve for x
x = 133,294,154,837.30/420,621.12 - Step 6: Final answer
x = 316,898.39
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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.