Finding the Fourth Proportional to 261,412.71, 392,133.64 and 74,409.63
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Solution
The fourth proportional to 261,412.71, 392,133.64 and 74,409.63 is: 111,618.59
Step by Step Solution
- Step 1: Write the proportion equation
261,412.71 : 392,133.64 = 74,409.63 : x - Step 2: Convert to fraction form
261,412.71/392,133.64 = 74,409.63/x - Step 3: Cross multiply
261,412.71x = 392,133.64 × 74,409.63 - Step 4: Simplify right side
261,412.71x = 29,178,519,062.95 - Step 5: Solve for x
x = 29,178,519,062.95/261,412.71 - Step 6: Final answer
x = 111,618.59
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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.