Finding the Fourth Proportional to 390,459.62, 585,020.16 and 262,135.54
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Solution
The fourth proportional to 390,459.62, 585,020.16 and 262,135.54 is: 392,753.99
Step by Step Solution
- Step 1: Write the proportion equation
390,459.62 : 585,020.16 = 262,135.54 : x - Step 2: Convert to fraction form
390,459.62/585,020.16 = 262,135.54/x - Step 3: Cross multiply
390,459.62x = 585,020.16 × 262,135.54 - Step 4: Simplify right side
390,459.62x = 153,354,575,552.49 - Step 5: Solve for x
x = 153,354,575,552.49/390,459.62 - Step 6: Final answer
x = 392,753.99
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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.