Finding the Fourth Proportional to 287,102.53, 430,653.93 and 129,146.44
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Solution
The fourth proportional to 287,102.53, 430,653.93 and 129,146.44 is: 193,719.72
Step by Step Solution
- Step 1: Write the proportion equation
287,102.53 : 430,653.93 = 129,146.44 : x - Step 2: Convert to fraction form
287,102.53/430,653.93 = 129,146.44/x - Step 3: Cross multiply
287,102.53x = 430,653.93 × 129,146.44 - Step 4: Simplify right side
287,102.53x = 55,617,421,931.51 - Step 5: Solve for x
x = 55,617,421,931.51/287,102.53 - Step 6: Final answer
x = 193,719.72
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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.