Finding the Fourth Proportional to 387,423.10, 534,130.26 and 318,252.74
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Solution
The fourth proportional to 387,423.10, 534,130.26 and 318,252.74 is: 438,766.86
Step by Step Solution
- Step 1: Write the proportion equation
387,423.10 : 534,130.26 = 318,252.74 : x - Step 2: Convert to fraction form
387,423.10/534,130.26 = 318,252.74/x - Step 3: Cross multiply
387,423.10x = 534,130.26 × 318,252.74 - Step 4: Simplify right side
387,423.10x = 169,988,416,091.26 - Step 5: Solve for x
x = 169,988,416,091.26/387,423.10 - Step 6: Final answer
x = 438,766.86
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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.