Finding the Fourth Proportional to 387,381.42, 581,132.25 and 197,739.09
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Solution
The fourth proportional to 387,381.42, 581,132.25 and 197,739.09 is: 296,639.32
Step by Step Solution
- Step 1: Write the proportion equation
387,381.42 : 581,132.25 = 197,739.09 : x - Step 2: Convert to fraction form
387,381.42/581,132.25 = 197,739.09/x - Step 3: Cross multiply
387,381.42x = 581,132.25 × 197,739.09 - Step 4: Simplify right side
387,381.42x = 114,912,562,284.65 - Step 5: Solve for x
x = 114,912,562,284.65/387,381.42 - Step 6: Final answer
x = 296,639.32
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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.