Finding the Fourth Proportional to 278,328.06, 417,519.42 and 78,649.95
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Solution
The fourth proportional to 278,328.06, 417,519.42 and 78,649.95 is: 117,982.65
Step by Step Solution
- Step 1: Write the proportion equation
278,328.06 : 417,519.42 = 78,649.95 : x - Step 2: Convert to fraction form
278,328.06/417,519.42 = 78,649.95/x - Step 3: Cross multiply
278,328.06x = 417,519.42 × 78,649.95 - Step 4: Simplify right side
278,328.06x = 32,837,881,507.03 - Step 5: Solve for x
x = 32,837,881,507.03/278,328.06 - Step 6: Final answer
x = 117,982.65
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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.