Finding the Fourth Proportional to 278,334.04, 417,523.62 and 78,656.08
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Solution
The fourth proportional to 278,334.04, 417,523.62 and 78,656.08 is: 117,990.50
Step by Step Solution
- Step 1: Write the proportion equation
278,334.04 : 417,523.62 = 78,656.08 : x - Step 2: Convert to fraction form
278,334.04/417,523.62 = 78,656.08/x - Step 3: Cross multiply
278,334.04x = 417,523.62 × 78,656.08 - Step 4: Simplify right side
278,334.04x = 32,840,771,256.61 - Step 5: Solve for x
x = 32,840,771,256.61/278,334.04 - Step 6: Final answer
x = 117,990.50
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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.