Finding the Fourth Proportional to 291,423.92, 399,252.16 and 280,502.74
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Solution
The fourth proportional to 291,423.92, 399,252.16 and 280,502.74 is: 384,290.09
Step by Step Solution
- Step 1: Write the proportion equation
291,423.92 : 399,252.16 = 280,502.74 : x - Step 2: Convert to fraction form
291,423.92/399,252.16 = 280,502.74/x - Step 3: Cross multiply
291,423.92x = 399,252.16 × 280,502.74 - Step 4: Simplify right side
291,423.92x = 111,991,323,768.80 - Step 5: Solve for x
x = 111,991,323,768.80/291,423.92 - Step 6: Final answer
x = 384,290.09
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.