Finding the Fourth Proportional to 398,795.19, 598,252.52 and 128,833.12
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Solution
The fourth proportional to 398,795.19, 598,252.52 and 128,833.12 is: 193,268.98
Step by Step Solution
- Step 1: Write the proportion equation
398,795.19 : 598,252.52 = 128,833.12 : x - Step 2: Convert to fraction form
398,795.19/598,252.52 = 128,833.12/x - Step 3: Cross multiply
398,795.19x = 598,252.52 × 128,833.12 - Step 4: Simplify right side
398,795.19x = 77,074,738,699.46 - Step 5: Solve for x
x = 77,074,738,699.46/398,795.19 - Step 6: Final answer
x = 193,268.98
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.