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Finding the Fourth Proportional to 275,353.56, 379,972.62 and 154,483.74

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Solution

The fourth proportional to 275,353.56, 379,972.62 and 154,483.74 is: 213,178.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,353.56 : 379,972.62 = 154,483.74 : x
  2. Step 2: Convert to fraction form
    275,353.56/379,972.62 = 154,483.74/x
  3. Step 3: Cross multiply
    275,353.56x = 379,972.62 × 154,483.74
  4. Step 4: Simplify right side
    275,353.56x = 58,699,591,435.20
  5. Step 5: Solve for x
    x = 58,699,591,435.20/275,353.56
  6. Step 6: Final answer
    x = 213,178.98

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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.