Finding the Fourth Proportional to 238,318.71, 328,742.55 and 142,770.06
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Solution
The fourth proportional to 238,318.71, 328,742.55 and 142,770.06 is: 196,940.45
Step by Step Solution
- Step 1: Write the proportion equation
238,318.71 : 328,742.55 = 142,770.06 : x - Step 2: Convert to fraction form
238,318.71/328,742.55 = 142,770.06/x - Step 3: Cross multiply
238,318.71x = 328,742.55 × 142,770.06 - Step 4: Simplify right side
238,318.71x = 46,934,593,588.05 - Step 5: Solve for x
x = 46,934,593,588.05/238,318.71 - Step 6: Final answer
x = 196,940.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.