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Finding the Fourth Proportional to 395,915.08, 546,611.94 and 275,017.48

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Solution

The fourth proportional to 395,915.08, 546,611.94 and 275,017.48 is: 379,697.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,915.08 : 546,611.94 = 275,017.48 : x
  2. Step 2: Convert to fraction form
    395,915.08/546,611.94 = 275,017.48/x
  3. Step 3: Cross multiply
    395,915.08x = 546,611.94 × 275,017.48
  4. Step 4: Simplify right side
    395,915.08x = 150,327,838,276.71
  5. Step 5: Solve for x
    x = 150,327,838,276.71/395,915.08
  6. Step 6: Final answer
    x = 379,697.18

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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.