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Finding the Fourth Proportional to 543,783.18, 814,432.28 and 259,672.74

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Solution

The fourth proportional to 543,783.18, 814,432.28 and 259,672.74 is: 388,915.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,783.18 : 814,432.28 = 259,672.74 : x
  2. Step 2: Convert to fraction form
    543,783.18/814,432.28 = 259,672.74/x
  3. Step 3: Cross multiply
    543,783.18x = 814,432.28 × 259,672.74
  4. Step 4: Simplify right side
    543,783.18x = 211,485,861,692.05
  5. Step 5: Solve for x
    x = 211,485,861,692.05/543,783.18
  6. Step 6: Final answer
    x = 388,915.78

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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.