Finding the Fourth Proportional to 390,460.24, 585,021.93 and 213,091.84
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Solution
The fourth proportional to 390,460.24, 585,021.93 and 213,091.84 is: 319,272.97
Step by Step Solution
- Step 1: Write the proportion equation
390,460.24 : 585,021.93 = 213,091.84 : x - Step 2: Convert to fraction form
390,460.24/585,021.93 = 213,091.84/x - Step 3: Cross multiply
390,460.24x = 585,021.93 × 213,091.84 - Step 4: Simplify right side
390,460.24x = 124,663,399,504.05 - Step 5: Solve for x
x = 124,663,399,504.05/390,460.24 - Step 6: Final answer
x = 319,272.97
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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.