Finding the Fourth Proportional to 430,854.21, 645,879.38 and 146,350.12
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Solution
The fourth proportional to 430,854.21, 645,879.38 and 146,350.12 is: 219,388.65
Step by Step Solution
- Step 1: Write the proportion equation
430,854.21 : 645,879.38 = 146,350.12 : x - Step 2: Convert to fraction form
430,854.21/645,879.38 = 146,350.12/x - Step 3: Cross multiply
430,854.21x = 645,879.38 × 146,350.12 - Step 4: Simplify right side
430,854.21x = 94,524,524,768.53 - Step 5: Solve for x
x = 94,524,524,768.53/430,854.21 - Step 6: Final answer
x = 219,388.65
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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.