Finding the Fourth Proportional to 261,990.36, 392,656.86 and 112,054.68
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Solution
The fourth proportional to 261,990.36, 392,656.86 and 112,054.68 is: 167,941.44
Step by Step Solution
- Step 1: Write the proportion equation
261,990.36 : 392,656.86 = 112,054.68 : x - Step 2: Convert to fraction form
261,990.36/392,656.86 = 112,054.68/x - Step 3: Cross multiply
261,990.36x = 392,656.86 × 112,054.68 - Step 4: Simplify right side
261,990.36x = 43,999,038,797.10 - Step 5: Solve for x
x = 43,999,038,797.10/261,990.36 - Step 6: Final answer
x = 167,941.44
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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.