Finding the Fourth Proportional to 361,432.13, 498,789.21 and 218,164.19
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Solution
The fourth proportional to 361,432.13, 498,789.21 and 218,164.19 is: 301,074.35
Step by Step Solution
- Step 1: Write the proportion equation
361,432.13 : 498,789.21 = 218,164.19 : x - Step 2: Convert to fraction form
361,432.13/498,789.21 = 218,164.19/x - Step 3: Cross multiply
361,432.13x = 498,789.21 × 218,164.19 - Step 4: Simplify right side
361,432.13x = 108,817,942,889.57 - Step 5: Solve for x
x = 108,817,942,889.57/361,432.13 - Step 6: Final answer
x = 301,074.35
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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.