Finding the Fourth Proportional to 421,714.71, 581,980.83 and 230,728.08
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Solution
The fourth proportional to 421,714.71, 581,980.83 and 230,728.08 is: 318,412.70
Step by Step Solution
- Step 1: Write the proportion equation
421,714.71 : 581,980.83 = 230,728.08 : x - Step 2: Convert to fraction form
421,714.71/581,980.83 = 230,728.08/x - Step 3: Cross multiply
421,714.71x = 581,980.83 × 230,728.08 - Step 4: Simplify right side
421,714.71x = 134,279,319,502.71 - Step 5: Solve for x
x = 134,279,319,502.71/421,714.71 - Step 6: Final answer
x = 318,412.70
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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.