Finding the Fourth Proportional to 420,630.12, 580,444.92 and 229,605.12
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Solution
The fourth proportional to 420,630.12, 580,444.92 and 229,605.12 is: 316,841.61
Step by Step Solution
- Step 1: Write the proportion equation
420,630.12 : 580,444.92 = 229,605.12 : x - Step 2: Convert to fraction form
420,630.12/580,444.92 = 229,605.12/x - Step 3: Cross multiply
420,630.12x = 580,444.92 × 229,605.12 - Step 4: Simplify right side
420,630.12x = 133,273,125,509.99 - Step 5: Solve for x
x = 133,273,125,509.99/420,630.12 - Step 6: Final answer
x = 316,841.61
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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.