Finding the Fourth Proportional to 310,449.75, 428,421.20 and 176,313.75
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Solution
The fourth proportional to 310,449.75, 428,421.20 and 176,313.75 is: 243,313.28
Step by Step Solution
- Step 1: Write the proportion equation
310,449.75 : 428,421.20 = 176,313.75 : x - Step 2: Convert to fraction form
310,449.75/428,421.20 = 176,313.75/x - Step 3: Cross multiply
310,449.75x = 428,421.20 × 176,313.75 - Step 4: Simplify right side
310,449.75x = 75,536,547,469.93 - Step 5: Solve for x
x = 75,536,547,469.93/310,449.75 - Step 6: Final answer
x = 243,313.28
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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.