Finding the Fourth Proportional to 230,816.21, 318,579.50 and 135,353.66
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Solution
The fourth proportional to 230,816.21, 318,579.50 and 135,353.66 is: 186,819.21
Step by Step Solution
- Step 1: Write the proportion equation
230,816.21 : 318,579.50 = 135,353.66 : x - Step 2: Convert to fraction form
230,816.21/318,579.50 = 135,353.66/x - Step 3: Cross multiply
230,816.21x = 318,579.50 × 135,353.66 - Step 4: Simplify right side
230,816.21x = 43,120,900,071.46 - Step 5: Solve for x
x = 43,120,900,071.46/230,816.21 - Step 6: Final answer
x = 186,819.21
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.