Finding the Fourth Proportional to 305,501.20, 458,251.80 and 266,135.20
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Solution
The fourth proportional to 305,501.20, 458,251.80 and 266,135.20 is: 399,202.80
Step by Step Solution
- Step 1: Write the proportion equation
305,501.20 : 458,251.80 = 266,135.20 : x - Step 2: Convert to fraction form
305,501.20/458,251.80 = 266,135.20/x - Step 3: Cross multiply
305,501.20x = 458,251.80 × 266,135.20 - Step 4: Simplify right side
305,501.20x = 121,956,934,443.36 - Step 5: Solve for x
x = 121,956,934,443.36/305,501.20 - Step 6: Final answer
x = 399,202.80
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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.