Finding the Fourth Proportional to 395,391.12, 592,964.09 and 142,638.76
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Solution
The fourth proportional to 395,391.12, 592,964.09 and 142,638.76 is: 213,913.92
Step by Step Solution
- Step 1: Write the proportion equation
395,391.12 : 592,964.09 = 142,638.76 : x - Step 2: Convert to fraction form
395,391.12/592,964.09 = 142,638.76/x - Step 3: Cross multiply
395,391.12x = 592,964.09 × 142,638.76 - Step 4: Simplify right side
395,391.12x = 84,579,662,522.13 - Step 5: Solve for x
x = 84,579,662,522.13/395,391.12 - Step 6: Final answer
x = 213,913.92
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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.