Finding the Fourth Proportional to 261,768.09, 392,652.13 and 74,779.59
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Solution
The fourth proportional to 261,768.09, 392,652.13 and 74,779.59 is: 112,169.38
Step by Step Solution
- Step 1: Write the proportion equation
261,768.09 : 392,652.13 = 74,779.59 : x - Step 2: Convert to fraction form
261,768.09/392,652.13 = 74,779.59/x - Step 3: Cross multiply
261,768.09x = 392,652.13 × 74,779.59 - Step 4: Simplify right side
261,768.09x = 29,362,363,915.06 - Step 5: Solve for x
x = 29,362,363,915.06/261,768.09 - Step 6: Final answer
x = 112,169.38
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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.