Finding the Fourth Proportional to 420,358.12, 580,097.64 and 229,374.70
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Solution
The fourth proportional to 420,358.12, 580,097.64 and 229,374.70 is: 316,538.96
Step by Step Solution
- Step 1: Write the proportion equation
420,358.12 : 580,097.64 = 229,374.70 : x - Step 2: Convert to fraction form
420,358.12/580,097.64 = 229,374.70/x - Step 3: Cross multiply
420,358.12x = 580,097.64 × 229,374.70 - Step 4: Simplify right side
420,358.12x = 133,059,722,145.71 - Step 5: Solve for x
x = 133,059,722,145.71/420,358.12 - Step 6: Final answer
x = 316,538.96
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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.