Finding the Fourth Proportional to 639,958.77, 959,993.28 and 166,644.99
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Solution
The fourth proportional to 639,958.77, 959,993.28 and 166,644.99 is: 249,981.84
Step by Step Solution
- Step 1: Write the proportion equation
639,958.77 : 959,993.28 = 166,644.99 : x - Step 2: Convert to fraction form
639,958.77/959,993.28 = 166,644.99/x - Step 3: Cross multiply
639,958.77x = 959,993.28 × 166,644.99 - Step 4: Simplify right side
639,958.77x = 159,978,070,545.67 - Step 5: Solve for x
x = 159,978,070,545.67/639,958.77 - Step 6: Final answer
x = 249,981.84
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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.