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Finding the Fourth Proportional to 272,892.60, 409,533.30 and 115,234.20

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Solution

The fourth proportional to 272,892.60, 409,533.30 and 115,234.20 is: 172,933.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,892.60 : 409,533.30 = 115,234.20 : x
  2. Step 2: Convert to fraction form
    272,892.60/409,533.30 = 115,234.20/x
  3. Step 3: Cross multiply
    272,892.60x = 409,533.30 × 115,234.20
  4. Step 4: Simplify right side
    272,892.60x = 47,192,242,198.86
  5. Step 5: Solve for x
    x = 47,192,242,198.86/272,892.60
  6. Step 6: Final answer
    x = 172,933.39

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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.