Finding the Fourth Proportional to 485,431.26, 728,146.26 and 130,445.28
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Solution
The fourth proportional to 485,431.26, 728,146.26 and 130,445.28 is: 195,667.75
Step by Step Solution
- Step 1: Write the proportion equation
485,431.26 : 728,146.26 = 130,445.28 : x - Step 2: Convert to fraction form
485,431.26/728,146.26 = 130,445.28/x - Step 3: Cross multiply
485,431.26x = 728,146.26 × 130,445.28 - Step 4: Simplify right side
485,431.26x = 94,983,242,766.65 - Step 5: Solve for x
x = 94,983,242,766.65/485,431.26 - Step 6: Final answer
x = 195,667.75
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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.