Finding the Fourth Proportional to 478,207.72, 717,311.58 and 145,780.84
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Solution
The fourth proportional to 478,207.72, 717,311.58 and 145,780.84 is: 218,671.26
Step by Step Solution
- Step 1: Write the proportion equation
478,207.72 : 717,311.58 = 145,780.84 : x - Step 2: Convert to fraction form
478,207.72/717,311.58 = 145,780.84/x - Step 3: Cross multiply
478,207.72x = 717,311.58 × 145,780.84 - Step 4: Simplify right side
478,207.72x = 104,570,284,674.13 - Step 5: Solve for x
x = 104,570,284,674.13/478,207.72 - Step 6: Final answer
x = 218,671.26
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Similar ratio
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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.