Finding the Fourth Proportional to 278,474.76, 417,659.22 and 78,746.99
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Solution
The fourth proportional to 278,474.76, 417,659.22 and 78,746.99 is: 118,105.51
Step by Step Solution
- Step 1: Write the proportion equation
278,474.76 : 417,659.22 = 78,746.99 : x - Step 2: Convert to fraction form
278,474.76/417,659.22 = 78,746.99/x - Step 3: Cross multiply
278,474.76x = 417,659.22 × 78,746.99 - Step 4: Simplify right side
278,474.76x = 32,889,404,332.45 - Step 5: Solve for x
x = 32,889,404,332.45/278,474.76 - Step 6: Final answer
x = 118,105.51
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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.