Finding the Fourth Proportional to 390,785.93, 585,872.66 and 154,305.62
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Solution
The fourth proportional to 390,785.93, 585,872.66 and 154,305.62 is: 231,337.51
Step by Step Solution
- Step 1: Write the proportion equation
390,785.93 : 585,872.66 = 154,305.62 : x - Step 2: Convert to fraction form
390,785.93/585,872.66 = 154,305.62/x - Step 3: Cross multiply
390,785.93x = 585,872.66 × 154,305.62 - Step 4: Simplify right side
390,785.93x = 90,403,444,042.35 - Step 5: Solve for x
x = 90,403,444,042.35/390,785.93 - Step 6: Final answer
x = 231,337.51
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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.