Finding the Fourth Proportional to 390,115.45, 585,318.98 and 153,622.99
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Solution
The fourth proportional to 390,115.45, 585,318.98 and 153,622.99 is: 230,491.90
Step by Step Solution
- Step 1: Write the proportion equation
390,115.45 : 585,318.98 = 153,622.99 : x - Step 2: Convert to fraction form
390,115.45/585,318.98 = 153,622.99/x - Step 3: Cross multiply
390,115.45x = 585,318.98 × 153,622.99 - Step 4: Simplify right side
390,115.45x = 89,918,451,811.35 - Step 5: Solve for x
x = 89,918,451,811.35/390,115.45 - Step 6: Final answer
x = 230,491.90
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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.