Finding the Fourth Proportional to 430,706.44, 646,008.78 and 115,187.80
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Solution
The fourth proportional to 430,706.44, 646,008.78 and 115,187.80 is: 172,768.09
Step by Step Solution
- Step 1: Write the proportion equation
430,706.44 : 646,008.78 = 115,187.80 : x - Step 2: Convert to fraction form
430,706.44/646,008.78 = 115,187.80/x - Step 3: Cross multiply
430,706.44x = 646,008.78 × 115,187.80 - Step 4: Simplify right side
430,706.44x = 74,412,330,148.88 - Step 5: Solve for x
x = 74,412,330,148.88/430,706.44 - Step 6: Final answer
x = 172,768.09
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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.