Finding the Fourth Proportional to 328,565.35, 492,636.14 and 128,905.92
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Solution
The fourth proportional to 328,565.35, 492,636.14 and 128,905.92 is: 193,275.75
Step by Step Solution
- Step 1: Write the proportion equation
328,565.35 : 492,636.14 = 128,905.92 : x - Step 2: Convert to fraction form
328,565.35/492,636.14 = 128,905.92/x - Step 3: Cross multiply
328,565.35x = 492,636.14 × 128,905.92 - Step 4: Simplify right side
328,565.35x = 63,503,714,207.42 - Step 5: Solve for x
x = 63,503,714,207.42/328,565.35 - Step 6: Final answer
x = 193,275.75
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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.