Finding the Fourth Proportional to 261,590.19, 392,374.95 and 74,601.69
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Solution
The fourth proportional to 261,590.19, 392,374.95 and 74,601.69 is: 111,899.59
Step by Step Solution
- Step 1: Write the proportion equation
261,590.19 : 392,374.95 = 74,601.69 : x - Step 2: Convert to fraction form
261,590.19/392,374.95 = 74,601.69/x - Step 3: Cross multiply
261,590.19x = 392,374.95 × 74,601.69 - Step 4: Simplify right side
261,590.19x = 29,271,834,383.67 - Step 5: Solve for x
x = 29,271,834,383.67/261,590.19 - Step 6: Final answer
x = 111,899.59
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1.5x scale
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.