Finding the Fourth Proportional to 257,508.22, 355,357.62 and 142,787.08
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Solution
The fourth proportional to 257,508.22, 355,357.62 and 142,787.08 is: 197,044.11
Step by Step Solution
- Step 1: Write the proportion equation
257,508.22 : 355,357.62 = 142,787.08 : x - Step 2: Convert to fraction form
257,508.22/355,357.62 = 142,787.08/x - Step 3: Cross multiply
257,508.22x = 355,357.62 × 142,787.08 - Step 4: Simplify right side
257,508.22x = 50,740,476,915.55 - Step 5: Solve for x
x = 50,740,476,915.55/257,508.22 - Step 6: Final answer
x = 197,044.11
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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.