Finding the Fourth Proportional to 387,744.62, 581,617.07 and 121,525.79
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Solution
The fourth proportional to 387,744.62, 581,617.07 and 121,525.79 is: 182,288.73
Step by Step Solution
- Step 1: Write the proportion equation
387,744.62 : 581,617.07 = 121,525.79 : x - Step 2: Convert to fraction form
387,744.62/581,617.07 = 121,525.79/x - Step 3: Cross multiply
387,744.62x = 581,617.07 × 121,525.79 - Step 4: Simplify right side
387,744.62x = 70,681,473,909.24 - Step 5: Solve for x
x = 70,681,473,909.24/387,744.62 - Step 6: Final answer
x = 182,288.73
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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.