Finding the Fourth Proportional to 311,987.64, 430,544.16 and 168,748.68
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Solution
The fourth proportional to 311,987.64, 430,544.16 and 168,748.68 is: 232,873.84
Step by Step Solution
- Step 1: Write the proportion equation
311,987.64 : 430,544.16 = 168,748.68 : x - Step 2: Convert to fraction form
311,987.64/430,544.16 = 168,748.68/x - Step 3: Cross multiply
311,987.64x = 430,544.16 × 168,748.68 - Step 4: Simplify right side
311,987.64x = 72,653,758,681.71 - Step 5: Solve for x
x = 72,653,758,681.71/311,987.64 - Step 6: Final answer
x = 232,873.84
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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.