Finding the Fourth Proportional to 408,664.08, 612,994.84 and 128,202.64
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Solution
The fourth proportional to 408,664.08, 612,994.84 and 128,202.64 is: 192,303.56
Step by Step Solution
- Step 1: Write the proportion equation
408,664.08 : 612,994.84 = 128,202.64 : x - Step 2: Convert to fraction form
408,664.08/612,994.84 = 128,202.64/x - Step 3: Cross multiply
408,664.08x = 612,994.84 × 128,202.64 - Step 4: Simplify right side
408,664.08x = 78,587,556,794.38 - Step 5: Solve for x
x = 78,587,556,794.38/408,664.08 - Step 6: Final answer
x = 192,303.56
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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.