Finding the Fourth Proportional to 485,749.80, 728,624.70 and 153,325.80
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Solution
The fourth proportional to 485,749.80, 728,624.70 and 153,325.80 is: 229,988.70
Step by Step Solution
- Step 1: Write the proportion equation
485,749.80 : 728,624.70 = 153,325.80 : x - Step 2: Convert to fraction form
485,749.80/728,624.70 = 153,325.80/x - Step 3: Cross multiply
485,749.80x = 728,624.70 × 153,325.80 - Step 4: Simplify right side
485,749.80x = 111,716,965,027.26 - Step 5: Solve for x
x = 111,716,965,027.26/485,749.80 - Step 6: Final answer
x = 229,988.70
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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.