Finding the Fourth Proportional to 261,574.13, 392,364.90 and 74,585.63
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Solution
The fourth proportional to 261,574.13, 392,364.90 and 74,585.63 is: 111,879.50
Step by Step Solution
- Step 1: Write the proportion equation
261,574.13 : 392,364.90 = 74,585.63 : x - Step 2: Convert to fraction form
261,574.13/392,364.90 = 74,585.63/x - Step 3: Cross multiply
261,574.13x = 392,364.90 × 74,585.63 - Step 4: Simplify right side
261,574.13x = 29,264,781,294.56 - Step 5: Solve for x
x = 29,264,781,294.56/261,574.13 - Step 6: Final answer
x = 111,879.50
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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.