Finding the Fourth Proportional to 678,415.50, 1,018,089.81 and 235,183.50
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Solution
The fourth proportional to 678,415.50, 1,018,089.81 and 235,183.50 is: 352,936.99
Step by Step Solution
- Step 1: Write the proportion equation
678,415.50 : 1,018,089.81 = 235,183.50 : x - Step 2: Convert to fraction form
678,415.50/1,018,089.81 = 235,183.50/x - Step 3: Cross multiply
678,415.50x = 1,018,089.81 × 235,183.50 - Step 4: Simplify right side
678,415.50x = 239,437,924,830.14 - Step 5: Solve for x
x = 239,437,924,830.14/678,415.50 - Step 6: Final answer
x = 352,936.99
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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.