Finding the Fourth Proportional to 388,755.42, 581,816.34 and 239,090.49
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Solution
The fourth proportional to 388,755.42, 581,816.34 and 239,090.49 is: 357,825.89
Step by Step Solution
- Step 1: Write the proportion equation
388,755.42 : 581,816.34 = 239,090.49 : x - Step 2: Convert to fraction form
388,755.42/581,816.34 = 239,090.49/x - Step 3: Cross multiply
388,755.42x = 581,816.34 × 239,090.49 - Step 4: Simplify right side
388,755.42x = 139,106,753,820.61 - Step 5: Solve for x
x = 139,106,753,820.61/388,755.42 - Step 6: Final answer
x = 357,825.89
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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.