Finding the Fourth Proportional to 305,670.34, 458,358.04 and 128,129.68
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Solution
The fourth proportional to 305,670.34, 458,358.04 and 128,129.68 is: 192,132.70
Step by Step Solution
- Step 1: Write the proportion equation
305,670.34 : 458,358.04 = 128,129.68 : x - Step 2: Convert to fraction form
305,670.34/458,358.04 = 128,129.68/x - Step 3: Cross multiply
305,670.34x = 458,358.04 × 128,129.68 - Step 4: Simplify right side
305,670.34x = 58,729,268,990.63 - Step 5: Solve for x
x = 58,729,268,990.63/305,670.34 - Step 6: Final answer
x = 192,132.70
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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.