Finding the Fourth Proportional to 316,644.22, 474,967.28 and 76,757.18
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Solution
The fourth proportional to 316,644.22, 474,967.28 and 76,757.18 is: 115,136.00
Step by Step Solution
- Step 1: Write the proportion equation
316,644.22 : 474,967.28 = 76,757.18 : x - Step 2: Convert to fraction form
316,644.22/474,967.28 = 76,757.18/x - Step 3: Cross multiply
316,644.22x = 474,967.28 × 76,757.18 - Step 4: Simplify right side
316,644.22x = 36,457,149,005.07 - Step 5: Solve for x
x = 36,457,149,005.07/316,644.22 - Step 6: Final answer
x = 115,136.00
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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.