Finding the Fourth Proportional to 386,381.21, 576,757.50 and 357,888.78
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Solution
The fourth proportional to 386,381.21, 576,757.50 and 357,888.78 is: 534,226.39
Step by Step Solution
- Step 1: Write the proportion equation
386,381.21 : 576,757.50 = 357,888.78 : x - Step 2: Convert to fraction form
386,381.21/576,757.50 = 357,888.78/x - Step 3: Cross multiply
386,381.21x = 576,757.50 × 357,888.78 - Step 4: Simplify right side
386,381.21x = 206,415,038,030.85 - Step 5: Solve for x
x = 206,415,038,030.85/386,381.21 - Step 6: Final answer
x = 534,226.39
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.