Finding the Fourth Proportional to 312,319.65, 468,470.97 and 87,681.95
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Solution
The fourth proportional to 312,319.65, 468,470.97 and 87,681.95 is: 131,520.53
Step by Step Solution
- Step 1: Write the proportion equation
312,319.65 : 468,470.97 = 87,681.95 : x - Step 2: Convert to fraction form
312,319.65/468,470.97 = 87,681.95/x - Step 3: Cross multiply
312,319.65x = 468,470.97 × 87,681.95 - Step 4: Simplify right side
312,319.65x = 41,076,445,387.23 - Step 5: Solve for x
x = 41,076,445,387.23/312,319.65 - Step 6: Final answer
x = 131,520.53
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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.