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Finding the Fourth Proportional to 345,827.20, 519,129.60 and 267,289.60

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Solution

The fourth proportional to 345,827.20, 519,129.60 and 267,289.60 is: 401,234.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,827.20 : 519,129.60 = 267,289.60 : x
  2. Step 2: Convert to fraction form
    345,827.20/519,129.60 = 267,289.60/x
  3. Step 3: Cross multiply
    345,827.20x = 519,129.60 × 267,289.60
  4. Step 4: Simplify right side
    345,827.20x = 138,757,943,132.16
  5. Step 5: Solve for x
    x = 138,757,943,132.16/345,827.20
  6. Step 6: Final answer
    x = 401,234.90

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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.