Finding the Fourth Proportional to 390,450.45, 585,821.49 and 153,957.99
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Solution
The fourth proportional to 390,450.45, 585,821.49 and 153,957.99 is: 230,994.48
Step by Step Solution
- Step 1: Write the proportion equation
390,450.45 : 585,821.49 = 153,957.99 : x - Step 2: Convert to fraction form
390,450.45/585,821.49 = 153,957.99/x - Step 3: Cross multiply
390,450.45x = 585,821.49 × 153,957.99 - Step 4: Simplify right side
390,450.45x = 90,191,899,099.21 - Step 5: Solve for x
x = 90,191,899,099.21/390,450.45 - Step 6: Final answer
x = 230,994.48
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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.