Finding the Fourth Proportional to 387,979.07, 581,993.20 and 121,750.09
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Solution
The fourth proportional to 387,979.07, 581,993.20 and 121,750.09 is: 182,632.85
Step by Step Solution
- Step 1: Write the proportion equation
387,979.07 : 581,993.20 = 121,750.09 : x - Step 2: Convert to fraction form
387,979.07/581,993.20 = 121,750.09/x - Step 3: Cross multiply
387,979.07x = 581,993.20 × 121,750.09 - Step 4: Simplify right side
387,979.07x = 70,857,721,569.42 - Step 5: Solve for x
x = 70,857,721,569.42/387,979.07 - Step 6: Final answer
x = 182,632.85
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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.