Finding the Fourth Proportional to 390,354.12, 585,136.44 and 153,604.08
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Solution
The fourth proportional to 390,354.12, 585,136.44 and 153,604.08 is: 230,250.79
Step by Step Solution
- Step 1: Write the proportion equation
390,354.12 : 585,136.44 = 153,604.08 : x - Step 2: Convert to fraction form
390,354.12/585,136.44 = 153,604.08/x - Step 3: Cross multiply
390,354.12x = 585,136.44 × 153,604.08 - Step 4: Simplify right side
390,354.12x = 89,879,344,540.68 - Step 5: Solve for x
x = 89,879,344,540.68/390,354.12 - Step 6: Final answer
x = 230,250.79
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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.