Finding the Fourth Proportional to 442,089.20, 663,133.80 and 331,497.20
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Solution
The fourth proportional to 442,089.20, 663,133.80 and 331,497.20 is: 497,245.80
Step by Step Solution
- Step 1: Write the proportion equation
442,089.20 : 663,133.80 = 331,497.20 : x - Step 2: Convert to fraction form
442,089.20/663,133.80 = 331,497.20/x - Step 3: Cross multiply
442,089.20x = 663,133.80 × 331,497.20 - Step 4: Simplify right side
442,089.20x = 219,826,997,925.36 - Step 5: Solve for x
x = 219,826,997,925.36/442,089.20 - Step 6: Final answer
x = 497,245.80
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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.