Finding the Fourth Proportional to 239,242.16, 358,918.79 and 81,471.98
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Solution
The fourth proportional to 239,242.16, 358,918.79 and 81,471.98 is: 122,226.88
Step by Step Solution
- Step 1: Write the proportion equation
239,242.16 : 358,918.79 = 81,471.98 : x - Step 2: Convert to fraction form
239,242.16/358,918.79 = 81,471.98/x - Step 3: Cross multiply
239,242.16x = 358,918.79 × 81,471.98 - Step 4: Simplify right side
239,242.16x = 29,241,822,278.55 - Step 5: Solve for x
x = 29,241,822,278.55/239,242.16 - Step 6: Final answer
x = 122,226.88
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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.