Finding the Fourth Proportional to 390,447.45, 585,816.98 and 153,954.99
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Solution
The fourth proportional to 390,447.45, 585,816.98 and 153,954.99 is: 230,989.97
Step by Step Solution
- Step 1: Write the proportion equation
390,447.45 : 585,816.98 = 153,954.99 : x - Step 2: Convert to fraction form
390,447.45/585,816.98 = 153,954.99/x - Step 3: Cross multiply
390,447.45x = 585,816.98 × 153,954.99 - Step 4: Simplify right side
390,447.45x = 90,189,446,527.96 - Step 5: Solve for x
x = 90,189,446,527.96/390,447.45 - Step 6: Final answer
x = 230,989.97
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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.